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creeksider Group TitleBest ResponseYou've already chosen the best response.0
Multiply through by tanx and you'll have something that should look familiar.
 11 months ago

snowsurf Group TitleBest ResponseYou've already chosen the best response.0
\[\tan^2(x) +1 = \sec^2(x)\] We will sue this identity. \[\cot(x) = \tan(x)  \sec^2(x)/\tan(x) \] \[\cot(x) = [\tan^2(x) sex^2(x)]/\tan(x) \] Use the identity above \[\cot(x)= [\tan^2(x)  (\tan^2(x)  1]/\tan(x)\] \[\cot(x) =  1/\tan(x)\] 1/tan(x) is cot(x) so cot(x) = cot(x)
 11 months ago

snowsurf Group TitleBest ResponseYou've already chosen the best response.0
That 1 should be positive then become negative when distributing the negative sign.
 11 months ago
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