Please circle the name of your recitation leader: lanel, sanjeewa, zhang. Instructions: solve all problems in the space provided. Find the exact value of the following numbers (no decimal approximations!) csc (-t) (a) sin l l?c - - ( i) (over) cos ( (c) (d) tan 15" (e) cos15"cos75" Sketch an accurate graph of two periods of each of the following functions over the nonnegative x-axis. Clearly label on the graph the amplitude (if any), phase shift, intercepts, and asymptotes (if any) of each function. (a) y = 2 s i n ( m - x) (over) Verify the following trigonometric identities. (a) s i n 3 a = 3 s i n a - 4 s i n 3 ~ Two satellite tracking stations are located at points a and b 200 rniles apart. At a prearranged time, both stations measure the angle of elevatiorl of a satellite at point c (see figure).
