Today i was given some review questions from pre-calc, but i forgot how to even start the problems. One problem looks like this:(adsbygoogle = window.adsbygoogle || []).push({});

ln lsinxl=(ln l1-cos2x)-ln2)

i know that i have to prove that each side is equal, but i don't know where to begin...any suggestions?

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# I am Completely Clueless in Calculus

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