Question

Prove
cosA tanA = sinA

Answer 1

Answer:

cosA tanA=sin A

cosA sinA/cosA = sin A

sinA=sin A

LHS=RHS

Answer 2

Step-by-step explanation:

LHS

$= \cos( \alpha ) \tan( \alpha ) = \\ \cos( \alpha ) \frac{ \sin( \alpha ) }{ \cos( \alpha ) } = \sin( \alpha )$

$we \: know \: that$

RHS

$= \sin( \alpha )$

$hence$

LHS = RHS