Question

cos theta + sin theta\cos theta - sin theta - cos theta - sin theta\cos theta + sin theta = 2 tan2theta

Prove it !​

Answer 1

Step-by-step explanation:

$to \: prove \\ \\ \cos( \alpha ) + \frac{ \sin( \alpha ) }{ \cos( \alpha ) } - \sin( \alpha ) - \cos( \alpha ) - \frac{ \sin( \alpha ) }{ \cos( \alpha ) } + \sin( \alpha ) = 2 \tan(2 \alpha ) \\ \\ we \: get \\ lhs = 0 \\ \\ i \: think \: you \: wrote \: the \: questin \: wronly$