Question

plz solve this question

Answer 1

that is the solution of that question

Answer 2

Answer:

a Sin Ф - b Cos Ф/ a Sin Ф + b Cos Ф = a² - b²/ a² + b²............i

Given

tan Ф = a/b

Divide the equation by Cos Ф

a tan Ф - b / a tan Ф + b = a * (a/b) - b/ a * (a/b) + b

(a² - b²)b / (a² + b²)/b = a² - b²/ a² + b² = R.H.S