The value of the integral 
is
Mistake: limit should be 0 to π2
Right sol. In this question we apply the king rule
…(1)
…(2)
On adding eq(1) and eq(2)
1
The value of the integral is
Mistake: limit should be 0 to π2
Right sol. In this question we apply the king rule
…(1)
…(2)
On adding eq(1) and eq(2)