Question

if
$\alpha + \beta = \gamma$
and
$\frac{ \tan( \alpha ) }{ \tan( \beta ) } = \frac{x}{y}$
then prove that
$\sin( \alpha - \beta ) = \frac{x - y}{x + y} sin \gamma$


50 points!!​

Answer 1

Step-by-step explanation:

refer to the attachment

Answer 2

Answer:

refer to the attachment