Please find a b and c

Section 5.3 HW E Question 2 of 8 (1 point) | Question Attempt: 1 of Unlimited M Use the given information to find the exact function value. Simplify your answer as much as possible. Rationalize the denominator if necessary. cost= - , t In Quadrant III Part 1 of 3 (a) sin 2t= OVO X Part 2 of 3 (b) cos 2t= X Part 3 of 3 (c) tan 2t= X