Answer all questions and show your work. 1. Find the period and the amplitude and graph each function. (a) y = cos 2x (b) y = cos (c) y = -2cos x (d) y = tan (e) y = - tan 2x (f) y = - tan(2x - 1) + 3 2. Find the exact value of each expression. (a) sin '1 (b) cos 1(-1/2) (c) sin -12 (d) sin - V3 3. Find the exact value of the expression. (a) cos(cos-1(2/3)) (b) sin 1 (sin ?) (c) sin(tan '(-1))