MTH 141 Midterm: MTH 141 Oakland Midterm H141Test3aWI04
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Please circle the name of your recitation leader: Please circle the time of your recitation: lanel, menike, sanjeewa, wijesiri, zhang. Show all your work to receive full credit. Answers alone without accompanying work are worth little credit. Follow the instruction of no calculator for some problems. The total points of this test is 105. You only need to score 100 points to get 100% . 1. (14 pts. ) period, the phase shift, and intercepts, on your graph. Sketch the graph of y = 2 cos x . Indicate the reference angle or number for a given angle first and express the answers as fractions. (a) sin 11 . Two airplane tracking stations located at points a and b in a desert, are 200 miles apart. At a prearranged time, both stations measure the angle of elevation of an airplane as it crosses the vertical plane containing a, b (see figure below).
