I'm not sure how to prove these expressions true...the question is: Prove that each expression is an identity for all values for which it is defined. and, Thank you!
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divide the numerator and denominator by cosx For the other question, show some effort. Where exactly are you stuck?
Oh, wow, that was so obvious hahaha Thanks!! Any ideas on the second one?
factorize the denominator and change all cosx into secx..
That makes sense now, thank you!
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