Question

the given expression wherever defined simplifies to​

Answer 1

Answer:

${ \bold{= \frac{ \cot( \alpha )( - \sin( \alpha )) }{ \cos( \alpha ) } + \sin( \alpha ) \sin( \alpha ) + ( - \cos( \alpha ) )( - \cos( \alpha )) }} \\ \\ { \bold{ = - \frac{ \frac{ \cos( \alpha ) }{ \sin( \alpha ) } \times \sin( \alpha ) }{ \cos( \alpha ) } }} + {sin}^{2} ( \alpha ) + {cos}^{2} ( \alpha ) \\ \\ = - 1 + 1 \\ \\ = 0 \\ \\ \\ \\ { \bold{ \boxed{ \green{ \huge{FOLLOW ME ...}}}}}$