Question

see the attached file and answer it for me ​

Answer 1

MATE

YOUR SOLUTION IS IN ATTACHED PICTURE ATTACHED PICTURE ☺️

Answer 2

Formula used to prove the given identity

are :

$\tan(a) = \frac{ \sin(a) }{ \cos(a) } \\ \\ \sin(a + b) = \sin(a) \cos(b) + \cos(a) \sin(b) \\ \\ \cos(a + b) = \cos(a) \cos(b) - \sin(a) \sin(b)$


Please See attachment for detailed solution.


Thanks