If cot 0 = 2, cos 0 < 0, find the exact value of each of the following. (a) sin (20) (b) cos (20) (c) sin (d) cos 2 ... 4 (a) sin (20) = (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression.) 3 (b) cos (20) = 5 (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression.)

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