Ask your own question, for FREE!
Precalculus 16 Online
OpenStudy (anonymous):

Verify the identity. cos 4u = cos22u - sin22u

OpenStudy (anonymous):

plz check ur question

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!