PreCalculus
posted by Corin .
How can the following two identities be verified?
1. (cos^2y)/(1siny)=1+siny
2. sin^2asin^4a=cos^2acos^4a
Thanks!
change cos^2a to 1sin^2a=(1sina)(1+sina)
Thank you. I figured out the first one with your help, but I'm still stuck on the second. Any tips?
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