=
In this equation, try replacing with its identity =
In the denominator, try factoring out the 2 and seeing what the equation could be equal to.
Recall
I'm having trouble proving trig identities. Especially when the answers don't seem too obvious (you know, cancel something out here, cancel something out there, and then there's the answer). Here's the question I'm stuck on:
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If anyone can help, that would be appreciated!