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EXAM
Exam 1 (Corrected Version)
Math 1321, Spring 2007
Feb. 16, 2007
. Write all of your answers on separate sheets of paper.
You can keep the exam questions when you leave.
You may leave when finished.
. You must show enough work to justify your answers.
Unless otherwise instructed, give answers to the
appropriate number of significant figures.
. This exam has 7 problems. There are 440 points
total.
Good luck!
Problem 1. In the diagram below, find the six trigonometric functons of the60 pts.
angle ?. Show your answers in fractional form.
(?8, 6)
?
Problem 2. If tan(?) = 3/4 and cos(?) < 0, find sin(?) and cos(?). In what
60 pts. quadrant does the angle ? lie?
Problem 3. In each part, find the exact values of cos(?), sin(?) and tan(?).
80 pts. Draw a picture to illustrate your reasoning.
A. ? = 180?
B. ? = 30?
C. ? = 120?
D. ? = ?45?
1
Problem 4. A surveying device at ground level measures the angle of elevation60 pts.
of the top of a tower to be 27.0?. A laser range finder on the
...

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