if cot b =12/5,then proof tan^2 b-sin^2b=sin^4b sec^b
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Expert's answer
2011-10-13T12:35:32-0400
cot b=12/5 tan^2 b – sin^2 b=sin^4 b * sec^4 b sec^4 b = 1/cos^4 b tan^2 b – sin ^2 b= tan^4 b 1/cot^2 b – sin ^2 b= 1/cot^4 b sin^2 b=25/144-625/20736=2975/20736 625/20736=625/20736
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