Given that a is in Quadrant 2 and sin(a) =, give an exact answer for the following: a. sin(2a) = sin 16 9 b. cos(2a) = c. tan(2a) = 2. Given that is in Quadrant 1 and tan(B) = 1, give an exact answer for the following: a. sin(2/3) b. cos(26) c. tan(23)