What is the exact value of csc 11pi 6?
To find the exact value of csc 11pi/6, first determine sin 11pi/6. The angle 11pi/6 is in Quadrant IV, where sine is negative. The reference angle is pi/6, and sin pi/6 equals 1/2. Therefore, sin 11pi/6 is -1/2. Since csc x is 1/sin x, csc 11pi/6 is 1/(-1/2), which simplifies to -2.