Ask your own question, for FREE!
Mathematics 21 Online
OpenStudy (anonymous):

Need help with identities

OpenStudy (anonymous):

OK

OpenStudy (anonymous):

Cos(100)Cos(80)-Sin(100)Sin(80)

OpenStudy (anonymous):

The problem is in degrees

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!