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

tga/2+tgb/2 = 2*(sina+sinb)/(1+cos(a-b)+cos(a+b)) prove it heelp me :(

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!