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
Math.tanh