Friday
March 24, 2017

Post a New Question

Posted by on Saturday, February 2, 2013 at 10:54am.

cos^2 theta - sin^2 theta = 1

  • math - , Saturday, February 2, 2013 at 5:22pm

    only if theta = 0 or pi

    since cos^2 θ - sin^2 θ = cos2θ

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question