Q35 of 261 Page 834

Prove that

…(1)

Use King theorem of definite integral

…(2)

Adding eq.(1) and eq.(2)

…(3)

Use King theorem of definite integral

…(4)

Adding eq.(3) and eq.(4)

Let, 2x = t

⇒ 2 dx = dt

At x = 0, t = 0

At x = π/2, t = π

Prove that