Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

Use an angle sum identity to verify the identity ..... cos 2 (theta) = 2 cos^2 (theta) - 1

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!