?

Average Accuracy: 67.8% → 67.2%
Time: 21.1s
Precision: binary64
Cost: 20489

?

\[{\left(a \cdot \sin \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]
\[\begin{array}{l} \mathbf{if}\;angle \leq -1.1 \cdot 10^{+14} \lor \neg \left(angle \leq 0.07\right):\\ \;\;\;\;{b}^{2} + \frac{a}{\frac{2}{a}} \cdot \left(1 - \cos \left(\pi \cdot \left(angle \cdot 0.011111111111111112\right)\right)\right)\\ \mathbf{else}:\\ \;\;\;\;{b}^{2} + 0.005555555555555556 \cdot \left(\left(angle \cdot \left(a \cdot \pi\right)\right) \cdot \left(angle \cdot \left(0.005555555555555556 \cdot \left(a \cdot \pi\right)\right)\right)\right)\\ \end{array} \]
(FPCore (a b angle)
 :precision binary64
 (+
  (pow (* a (sin (* (/ angle 180.0) PI))) 2.0)
  (pow (* b (cos (* (/ angle 180.0) PI))) 2.0)))
(FPCore (a b angle)
 :precision binary64
 (if (or (<= angle -1.1e+14) (not (<= angle 0.07)))
   (+
    (pow b 2.0)
    (* (/ a (/ 2.0 a)) (- 1.0 (cos (* PI (* angle 0.011111111111111112))))))
   (+
    (pow b 2.0)
    (*
     0.005555555555555556
     (* (* angle (* a PI)) (* angle (* 0.005555555555555556 (* a PI))))))))
double code(double a, double b, double angle) {
	return pow((a * sin(((angle / 180.0) * ((double) M_PI)))), 2.0) + pow((b * cos(((angle / 180.0) * ((double) M_PI)))), 2.0);
}
double code(double a, double b, double angle) {
	double tmp;
	if ((angle <= -1.1e+14) || !(angle <= 0.07)) {
		tmp = pow(b, 2.0) + ((a / (2.0 / a)) * (1.0 - cos((((double) M_PI) * (angle * 0.011111111111111112)))));
	} else {
		tmp = pow(b, 2.0) + (0.005555555555555556 * ((angle * (a * ((double) M_PI))) * (angle * (0.005555555555555556 * (a * ((double) M_PI))))));
	}
	return tmp;
}
public static double code(double a, double b, double angle) {
	return Math.pow((a * Math.sin(((angle / 180.0) * Math.PI))), 2.0) + Math.pow((b * Math.cos(((angle / 180.0) * Math.PI))), 2.0);
}
public static double code(double a, double b, double angle) {
	double tmp;
	if ((angle <= -1.1e+14) || !(angle <= 0.07)) {
		tmp = Math.pow(b, 2.0) + ((a / (2.0 / a)) * (1.0 - Math.cos((Math.PI * (angle * 0.011111111111111112)))));
	} else {
		tmp = Math.pow(b, 2.0) + (0.005555555555555556 * ((angle * (a * Math.PI)) * (angle * (0.005555555555555556 * (a * Math.PI)))));
	}
	return tmp;
}
def code(a, b, angle):
	return math.pow((a * math.sin(((angle / 180.0) * math.pi))), 2.0) + math.pow((b * math.cos(((angle / 180.0) * math.pi))), 2.0)
def code(a, b, angle):
	tmp = 0
	if (angle <= -1.1e+14) or not (angle <= 0.07):
		tmp = math.pow(b, 2.0) + ((a / (2.0 / a)) * (1.0 - math.cos((math.pi * (angle * 0.011111111111111112)))))
	else:
		tmp = math.pow(b, 2.0) + (0.005555555555555556 * ((angle * (a * math.pi)) * (angle * (0.005555555555555556 * (a * math.pi)))))
	return tmp
function code(a, b, angle)
	return Float64((Float64(a * sin(Float64(Float64(angle / 180.0) * pi))) ^ 2.0) + (Float64(b * cos(Float64(Float64(angle / 180.0) * pi))) ^ 2.0))
end
function code(a, b, angle)
	tmp = 0.0
	if ((angle <= -1.1e+14) || !(angle <= 0.07))
		tmp = Float64((b ^ 2.0) + Float64(Float64(a / Float64(2.0 / a)) * Float64(1.0 - cos(Float64(pi * Float64(angle * 0.011111111111111112))))));
	else
		tmp = Float64((b ^ 2.0) + Float64(0.005555555555555556 * Float64(Float64(angle * Float64(a * pi)) * Float64(angle * Float64(0.005555555555555556 * Float64(a * pi))))));
	end
	return tmp
end
function tmp = code(a, b, angle)
	tmp = ((a * sin(((angle / 180.0) * pi))) ^ 2.0) + ((b * cos(((angle / 180.0) * pi))) ^ 2.0);
end
function tmp_2 = code(a, b, angle)
	tmp = 0.0;
	if ((angle <= -1.1e+14) || ~((angle <= 0.07)))
		tmp = (b ^ 2.0) + ((a / (2.0 / a)) * (1.0 - cos((pi * (angle * 0.011111111111111112)))));
	else
		tmp = (b ^ 2.0) + (0.005555555555555556 * ((angle * (a * pi)) * (angle * (0.005555555555555556 * (a * pi)))));
	end
	tmp_2 = tmp;
end
code[a_, b_, angle_] := N[(N[Power[N[(a * N[Sin[N[(N[(angle / 180.0), $MachinePrecision] * Pi), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision] + N[Power[N[(b * N[Cos[N[(N[(angle / 180.0), $MachinePrecision] * Pi), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision]
code[a_, b_, angle_] := If[Or[LessEqual[angle, -1.1e+14], N[Not[LessEqual[angle, 0.07]], $MachinePrecision]], N[(N[Power[b, 2.0], $MachinePrecision] + N[(N[(a / N[(2.0 / a), $MachinePrecision]), $MachinePrecision] * N[(1.0 - N[Cos[N[(Pi * N[(angle * 0.011111111111111112), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[Power[b, 2.0], $MachinePrecision] + N[(0.005555555555555556 * N[(N[(angle * N[(a * Pi), $MachinePrecision]), $MachinePrecision] * N[(angle * N[(0.005555555555555556 * N[(a * Pi), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
{\left(a \cdot \sin \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2}
\begin{array}{l}
\mathbf{if}\;angle \leq -1.1 \cdot 10^{+14} \lor \neg \left(angle \leq 0.07\right):\\
\;\;\;\;{b}^{2} + \frac{a}{\frac{2}{a}} \cdot \left(1 - \cos \left(\pi \cdot \left(angle \cdot 0.011111111111111112\right)\right)\right)\\

\mathbf{else}:\\
\;\;\;\;{b}^{2} + 0.005555555555555556 \cdot \left(\left(angle \cdot \left(a \cdot \pi\right)\right) \cdot \left(angle \cdot \left(0.005555555555555556 \cdot \left(a \cdot \pi\right)\right)\right)\right)\\


\end{array}

Error?

Try it out?

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation?

  1. Split input into 2 regimes
  2. if angle < -1.1e14 or 0.070000000000000007 < angle

    1. Initial program 28.4%

      \[{\left(a \cdot \sin \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]
    2. Simplified28.5%

      \[\leadsto \color{blue}{{\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \cos \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2}} \]
      Proof

      [Start]28.4

      \[ {\left(a \cdot \sin \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]

      associate-*l/ [=>]28.4

      \[ {\left(a \cdot \sin \color{blue}{\left(\frac{angle \cdot \pi}{180}\right)}\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]

      associate-*r/ [<=]28.4

      \[ {\left(a \cdot \sin \color{blue}{\left(angle \cdot \frac{\pi}{180}\right)}\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]

      associate-*l/ [=>]28.3

      \[ {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \cos \color{blue}{\left(\frac{angle \cdot \pi}{180}\right)}\right)}^{2} \]

      associate-*r/ [<=]28.5

      \[ {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \cos \color{blue}{\left(angle \cdot \frac{\pi}{180}\right)}\right)}^{2} \]
    3. Taylor expanded in angle around 0 28.8%

      \[\leadsto {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \color{blue}{1}\right)}^{2} \]
    4. Applied egg-rr28.7%

      \[\leadsto \color{blue}{\frac{\left(a \cdot a\right) \cdot \left(\cos \left(\left(angle \cdot \pi\right) \cdot 0\right) - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right)}{2}} + {\left(b \cdot 1\right)}^{2} \]
      Proof

      [Start]28.8

      \[ {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot 1\right)}^{2} \]

      unpow2 [=>]28.8

      \[ \color{blue}{\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right) \cdot \left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)} + {\left(b \cdot 1\right)}^{2} \]

      swap-sqr [=>]28.8

      \[ \color{blue}{\left(a \cdot a\right) \cdot \left(\sin \left(angle \cdot \frac{\pi}{180}\right) \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)} + {\left(b \cdot 1\right)}^{2} \]

      sin-mult [=>]28.8

      \[ \left(a \cdot a\right) \cdot \color{blue}{\frac{\cos \left(angle \cdot \frac{\pi}{180} - angle \cdot \frac{\pi}{180}\right) - \cos \left(angle \cdot \frac{\pi}{180} + angle \cdot \frac{\pi}{180}\right)}{2}} + {\left(b \cdot 1\right)}^{2} \]

      associate-*r/ [=>]28.7

      \[ \color{blue}{\frac{\left(a \cdot a\right) \cdot \left(\cos \left(angle \cdot \frac{\pi}{180} - angle \cdot \frac{\pi}{180}\right) - \cos \left(angle \cdot \frac{\pi}{180} + angle \cdot \frac{\pi}{180}\right)\right)}{2}} + {\left(b \cdot 1\right)}^{2} \]
    5. Simplified28.8%

      \[\leadsto \color{blue}{\frac{a}{\frac{2}{a}} \cdot \left(1 - \cos \left(\pi \cdot \left(angle \cdot 0.011111111111111112\right)\right)\right)} + {\left(b \cdot 1\right)}^{2} \]
      Proof

      [Start]28.7

      \[ \frac{\left(a \cdot a\right) \cdot \left(\cos \left(\left(angle \cdot \pi\right) \cdot 0\right) - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right)}{2} + {\left(b \cdot 1\right)}^{2} \]

      unpow2 [<=]28.7

      \[ \frac{\color{blue}{{a}^{2}} \cdot \left(\cos \left(\left(angle \cdot \pi\right) \cdot 0\right) - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right)}{2} + {\left(b \cdot 1\right)}^{2} \]

      associate-*l/ [<=]28.7

      \[ \color{blue}{\frac{{a}^{2}}{2} \cdot \left(\cos \left(\left(angle \cdot \pi\right) \cdot 0\right) - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right)} + {\left(b \cdot 1\right)}^{2} \]

      unpow2 [=>]28.7

      \[ \frac{\color{blue}{a \cdot a}}{2} \cdot \left(\cos \left(\left(angle \cdot \pi\right) \cdot 0\right) - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right) + {\left(b \cdot 1\right)}^{2} \]

      associate-/l* [=>]28.7

      \[ \color{blue}{\frac{a}{\frac{2}{a}}} \cdot \left(\cos \left(\left(angle \cdot \pi\right) \cdot 0\right) - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right) + {\left(b \cdot 1\right)}^{2} \]

      mul0-rgt [=>]28.7

      \[ \frac{a}{\frac{2}{a}} \cdot \left(\cos \color{blue}{0} - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right) + {\left(b \cdot 1\right)}^{2} \]

      cos-0 [=>]28.7

      \[ \frac{a}{\frac{2}{a}} \cdot \left(\color{blue}{1} - \cos \left(\left(angle \cdot \pi\right) \cdot 0.011111111111111112\right)\right) + {\left(b \cdot 1\right)}^{2} \]

      *-commutative [=>]28.7

      \[ \frac{a}{\frac{2}{a}} \cdot \left(1 - \cos \left(\color{blue}{\left(\pi \cdot angle\right)} \cdot 0.011111111111111112\right)\right) + {\left(b \cdot 1\right)}^{2} \]

      associate-*l* [=>]28.8

      \[ \frac{a}{\frac{2}{a}} \cdot \left(1 - \cos \color{blue}{\left(\pi \cdot \left(angle \cdot 0.011111111111111112\right)\right)}\right) + {\left(b \cdot 1\right)}^{2} \]

    if -1.1e14 < angle < 0.070000000000000007

    1. Initial program 99.2%

      \[{\left(a \cdot \sin \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]
    2. Simplified99.3%

      \[\leadsto \color{blue}{{\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \cos \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2}} \]
      Proof

      [Start]99.2

      \[ {\left(a \cdot \sin \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]

      associate-*l/ [=>]99.2

      \[ {\left(a \cdot \sin \color{blue}{\left(\frac{angle \cdot \pi}{180}\right)}\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]

      associate-*r/ [<=]99.3

      \[ {\left(a \cdot \sin \color{blue}{\left(angle \cdot \frac{\pi}{180}\right)}\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} \]

      associate-*l/ [=>]99.3

      \[ {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \cos \color{blue}{\left(\frac{angle \cdot \pi}{180}\right)}\right)}^{2} \]

      associate-*r/ [<=]99.3

      \[ {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \cos \color{blue}{\left(angle \cdot \frac{\pi}{180}\right)}\right)}^{2} \]
    3. Taylor expanded in angle around 0 98.7%

      \[\leadsto {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} + {\left(b \cdot \color{blue}{1}\right)}^{2} \]
    4. Taylor expanded in angle around 0 97.8%

      \[\leadsto {\color{blue}{\left(0.005555555555555556 \cdot \left(angle \cdot \left(a \cdot \pi\right)\right)\right)}}^{2} + {\left(b \cdot 1\right)}^{2} \]
    5. Simplified97.8%

      \[\leadsto {\color{blue}{\left(0.005555555555555556 \cdot \left(angle \cdot \left(\pi \cdot a\right)\right)\right)}}^{2} + {\left(b \cdot 1\right)}^{2} \]
      Proof

      [Start]97.8

      \[ {\left(0.005555555555555556 \cdot \left(angle \cdot \left(a \cdot \pi\right)\right)\right)}^{2} + {\left(b \cdot 1\right)}^{2} \]

      *-commutative [=>]97.8

      \[ {\left(0.005555555555555556 \cdot \left(angle \cdot \color{blue}{\left(\pi \cdot a\right)}\right)\right)}^{2} + {\left(b \cdot 1\right)}^{2} \]
    6. Applied egg-rr97.9%

      \[\leadsto \color{blue}{\left(\left(angle \cdot \left(\pi \cdot a\right)\right) \cdot \left(angle \cdot \left(0.005555555555555556 \cdot \left(\pi \cdot a\right)\right)\right)\right) \cdot 0.005555555555555556} + {\left(b \cdot 1\right)}^{2} \]
      Proof

      [Start]97.8

      \[ {\left(0.005555555555555556 \cdot \left(angle \cdot \left(\pi \cdot a\right)\right)\right)}^{2} + {\left(b \cdot 1\right)}^{2} \]

      unpow2 [=>]97.8

      \[ \color{blue}{\left(0.005555555555555556 \cdot \left(angle \cdot \left(\pi \cdot a\right)\right)\right) \cdot \left(0.005555555555555556 \cdot \left(angle \cdot \left(\pi \cdot a\right)\right)\right)} + {\left(b \cdot 1\right)}^{2} \]

      associate-*l* [=>]97.8

      \[ \color{blue}{0.005555555555555556 \cdot \left(\left(angle \cdot \left(\pi \cdot a\right)\right) \cdot \left(0.005555555555555556 \cdot \left(angle \cdot \left(\pi \cdot a\right)\right)\right)\right)} + {\left(b \cdot 1\right)}^{2} \]

      *-commutative [=>]97.8

      \[ \color{blue}{\left(\left(angle \cdot \left(\pi \cdot a\right)\right) \cdot \left(0.005555555555555556 \cdot \left(angle \cdot \left(\pi \cdot a\right)\right)\right)\right) \cdot 0.005555555555555556} + {\left(b \cdot 1\right)}^{2} \]

      *-commutative [=>]97.8

      \[ \left(\left(angle \cdot \left(\pi \cdot a\right)\right) \cdot \color{blue}{\left(\left(angle \cdot \left(\pi \cdot a\right)\right) \cdot 0.005555555555555556\right)}\right) \cdot 0.005555555555555556 + {\left(b \cdot 1\right)}^{2} \]

      associate-*l* [=>]97.9

      \[ \left(\left(angle \cdot \left(\pi \cdot a\right)\right) \cdot \color{blue}{\left(angle \cdot \left(\left(\pi \cdot a\right) \cdot 0.005555555555555556\right)\right)}\right) \cdot 0.005555555555555556 + {\left(b \cdot 1\right)}^{2} \]

      *-commutative [=>]97.9

      \[ \left(\left(angle \cdot \left(\pi \cdot a\right)\right) \cdot \left(angle \cdot \color{blue}{\left(0.005555555555555556 \cdot \left(\pi \cdot a\right)\right)}\right)\right) \cdot 0.005555555555555556 + {\left(b \cdot 1\right)}^{2} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification67.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;angle \leq -1.1 \cdot 10^{+14} \lor \neg \left(angle \leq 0.07\right):\\ \;\;\;\;{b}^{2} + \frac{a}{\frac{2}{a}} \cdot \left(1 - \cos \left(\pi \cdot \left(angle \cdot 0.011111111111111112\right)\right)\right)\\ \mathbf{else}:\\ \;\;\;\;{b}^{2} + 0.005555555555555556 \cdot \left(\left(angle \cdot \left(a \cdot \pi\right)\right) \cdot \left(angle \cdot \left(0.005555555555555556 \cdot \left(a \cdot \pi\right)\right)\right)\right)\\ \end{array} \]

Alternatives

Alternative 1
Accuracy67.9%
Cost58624
\[{\left(a \cdot \sin \left(\frac{angle}{\frac{180}{\pi}}\right)\right)}^{2} + {\left(b \cdot \cos \left(\sqrt{\pi} \cdot \frac{angle}{\frac{180}{\sqrt{\pi}}}\right)\right)}^{2} \]
Alternative 2
Accuracy67.9%
Cost45760
\[{\left(a \cdot \sin \left(\frac{angle}{\frac{180}{\pi}}\right)\right)}^{2} + {\left(b \cdot \cos \left(angle \cdot \left(\pi \cdot \sqrt[3]{-1.7146776406035666 \cdot 10^{-7}}\right)\right)\right)}^{2} \]
Alternative 3
Accuracy67.6%
Cost26240
\[{b}^{2} + {\left(a \cdot \sin \left(0.005555555555555556 \cdot \left(angle \cdot \pi\right)\right)\right)}^{2} \]
Alternative 4
Accuracy67.7%
Cost26240
\[{b}^{2} + {\left(a \cdot \sin \left(angle \cdot \frac{\pi}{180}\right)\right)}^{2} \]
Alternative 5
Accuracy67.7%
Cost26240
\[{\left(a \cdot \sin \left(\frac{angle}{\frac{180}{\pi}}\right)\right)}^{2} + {b}^{2} \]
Alternative 6
Accuracy67.3%
Cost20425
\[\begin{array}{l} \mathbf{if}\;angle \leq -1.1 \cdot 10^{+14} \lor \neg \left(angle \leq 0.07\right):\\ \;\;\;\;{b}^{2} + \frac{a}{\frac{2}{a}} \cdot \left(1 - \cos \left(\pi \cdot \left(angle \cdot 0.011111111111111112\right)\right)\right)\\ \mathbf{else}:\\ \;\;\;\;{b}^{2} + {\left(angle \cdot \left(a \cdot \left(\pi \cdot 0.005555555555555556\right)\right)\right)}^{2}\\ \end{array} \]
Alternative 7
Accuracy58.5%
Cost19840
\[{b}^{2} + 3.08641975308642 \cdot 10^{-5} \cdot {\left(angle \cdot \left(a \cdot \pi\right)\right)}^{2} \]
Alternative 8
Accuracy58.5%
Cost19840
\[{b}^{2} + {\left(a \cdot \left(angle \cdot \pi\right)\right)}^{2} \cdot 3.08641975308642 \cdot 10^{-5} \]
Alternative 9
Accuracy58.6%
Cost19840
\[{b}^{2} + {\left(0.005555555555555556 \cdot \left(a \cdot \left(angle \cdot \pi\right)\right)\right)}^{2} \]
Alternative 10
Accuracy58.6%
Cost19840
\[{b}^{2} + {\left(angle \cdot \left(a \cdot \left(\pi \cdot 0.005555555555555556\right)\right)\right)}^{2} \]

Error

Reproduce?

herbie shell --seed 2023135 
(FPCore (a b angle)
  :name "ab-angle->ABCF A"
  :precision binary64
  (+ (pow (* a (sin (* (/ angle 180.0) PI))) 2.0) (pow (* b (cos (* (/ angle 180.0) PI))) 2.0)))