Returns the square of the sine of this chord angle.
It is more efficient than Sin.
Let a be the (non-squared) chord length, and let A be the corresponding
half-angle (a = 2sin(A)). The formula below can be derived from:
sin(2A) = 2 * sin(A) * cos(A)
cos^2(A) = 1 - sin^2(A)
This is much faster than converting to an angle and computing its sine.
Returns the square of the sine of this chord angle. It is more efficient than Sin.
Let a be the (non-squared) chord length, and let A be the corresponding half-angle (a = 2sin(A)). The formula below can be derived from: sin(2A) = 2 * sin(A) * cos(A) cos^2(A) = 1 - sin^2(A) This is much faster than converting to an angle and computing its sine.