Question

Упростите tga cos a

Answer 1

$tg\alpha*Cos\alpha=\frac{Sin\alpha }{Cos\alpha}*Cos\alpha=Sin\alpha$

Answer 2

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