# How do I calculate the sine/cosine/tangent of an angle? Math.sin(angleInDegrees) doesn't seem to work.

Created May 4, 2012

**John Zukowski**

The trig functions in the Math class work in radians, not degrees. You need to convert the angle to radians before calling the appropriate method. Since `360 degrees = 2 pi radians`, multiplying the angle by `PI/180` will give you the appropriate value to pass along to the trig function. Starting with the 1.2 release of Java, you can also call `Math.toRadians()` and `Math.toDegrees()` to convert back and forth between the two units.