Tuesday
July 7, 2015

Homework Help: advanced functions

Posted by Anonymous on Monday, November 2, 2009 at 12:04pm.

Use the Pythagorean identity to show that the double angle formula for cosine can be written as
a) cos2x = 1 - 2sin^2x
b) cos2x = 2cos^2x - 1

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Members