Find the value of (int^{pi}_{0}frac{cos^{2}theta-1}{sin^{2}theta}dtheta)
-
A.
π -
B.
π/2 -
C.
-π/2 -
D.
-π
Correct Answer: Option D
Explanation
(int^{pi}_{0}frac{cos^{2}theta-1}{sin^{2}theta}dtheta = int^{pi}_{0}frac{-sin^{2}theta}{sin^{2}theta}\ = int^{pi}_{0}dtheta = -pi)