Ask your own question, for FREE!
Mathematics 13 Online
OpenStudy (yumyum247):

use the formula for cos(x+y) to develop a formula for cos(2x). in terms of both sine and cosine. show your steps.

OpenStudy (yumyum247):

|dw:1470266159724:dw|

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!