Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (marigirl):

64cos (x)- 64sin^2 (x)+64 cos^2 (x)=0 Please help solve for x

OpenStudy (anonymous):

Use the double-angle identity: cos(2x) = cos^2(x) - sin^2(x) http://www.purplemath.com/modules/idents.htm

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!