\frac { \tan A + \tan B } { \cot A + \cot B } = \tan A \tan B – InterviewSolution

1.

\frac { \tan A + \tan B } { \cot A + \cot B } = \tan A \tan B

Answer»

tanA + tanB------------------- cotA + cotB

tanA + tanB---------------------------1/tanA + 1/tanB

tanA + tanB------------------ × tanAtanB = tanAtanBtanA+ tanB

thanks bhai

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