Ask your own question, for FREE!
Mathematics 9 Online
OpenStudy (anonymous):

sin (x+pi/2)=cos x

OpenStudy (whpalmer4):

And what's more, \[\cos(x-\frac{\pi}{2}) = \sin(x)\]

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!