Math.atan2

math.atan2 (y, x)

Returns the arc tangent of y/x (in radians), but uses the signs of both parameters to find the quadrant of the result. (It also handles correctly the case of x being zero.)

Math.acos

Math.asin

Math.atan

Math.cos

Math.cosh

Math.deg

Math.rad

Math.sin

Math.sinh

Math.tan