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Unformatted text preview: Trigonometry Exam #1 Spring 2002 Name__________________________________ You must show all your work. All answers must be U exact U unless stated otherwise . 1. Use your calculator to approximate the following to 3 decimal places: (2 points each) a. ) 57 sin( = ____________________ b. ) 38 sec( = _________________________ 2. Convert 8 3 to degrees. (4 points) 3. Find the supplement of 7 2 . (4 points) 4. Find the measure of the intercepted arc of a circle with radius 8 meters and central angle = 60 . (6 points) 5. A wheel is rotating at 500 revolutions per minute. Find the angular speed in radians per second. (6 points) 5 6. Given the triangle find a. csc = ____________ b. tan = _______________ (4 points each) 9 7. Evaluate 3 tan 3 6 cot 45 sec + (8 points) 8. At 3:00 p.m., a boat is 12.5 miles due west of a radar station and traveling at 11 mph in a direction that is 57.3 south of an east-west line. At what time will the boat be closest to the radar station? At what time will the boat be closest to the radar station?...
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- Fall '11