How to find the volume of a regular pyramid?

Question

Java

Good day. I solve a problem and need to find the volume of a regular pyramid using the formula V = (n * Moth.pow(a, 2) * h) / (12 * tg * (180 degrees / n))
where h is the height of the pyramid, n is the number of sides in base, Moth.pow(a, 2) - base side (a squared), tg - tangent. I don’t understand how to represent tangent and 180 degrees in the code.

Answer 1

V = (n * Math.pow(a, 2) * h) / (12 * Math.tan( Math.toRadians(180.0 / n) ) )
Math.tan()
Math.toRadians()