Question

prove that................

Answer 1

Hey!!!!....here is ur answer

let alpha=A

tan8A=tan (5A+3A)

tan8A=tan5A+tan3A/1-tan5Atan3A

tan8A-tan8Atan5Atan3A=tan5A+tan3A

tan8A-tan5A-tan3A=tan8A tan5A tan3A

Hope it will help you ☺

Answer 2

its an easy one, just use the identity on LHS,you will reach RHS.