I'm retarded...any help would be much congratulated...and i have two problems that are bugging me fiercing(adsbygoogle = window.adsbygoogle || []).push({});

Prove the given identity:

1)

tan(x)-sin(x)/2tan(x) = sin^2(x/2)

2)

sin2x = 1 / tanx + cot2x

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# Homework Help: Trig Help

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