# Calculus

posted by
**Brian**
.

Suppose that sin q = − 12/13 and that q is a Quadrant IV angle.

(a) Find the exact value of cos q. Show work.

(b) Find the exact value of sin 2q. Show work.

posted by
**Brian**
.

Suppose that sin q = − 12/13 and that q is a Quadrant IV angle.

(a) Find the exact value of cos q. Show work.

(b) Find the exact value of sin 2q. Show work.