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# pf - MA 15400 Practice Final Exam Purdue Department of...

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MA 15400 Practice Final Exam Purdue Department of Mathematics

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MA 15400 Practice Final Exam 4/09 1 1. If θ is in the second quadrant, and sin 0.6, find cos . θ θ = A. – 0.75 B. 0.2 C. – 0.8 D. 0.8 E. None of the above. 2. The following angles are all coterminal except: π 5 π 3. The radian measure of an angle of ° 135 is: 5 π 3 π 3 π 7 π 4. Use a calculator to find sec126 ° correct to 4 decimal places.
MA 15400 Practice Final Exam 4/09 2 5. If the point ( ) 12, 16 is on the terminal side of angle θ , find tan θ . A. 3 5 B. 4 5 C. 3 4 D. 5 4 E. None of the above. 6. If the diameter of a circle is 6 cm, find the length of the arc that subtends a central angle of ° 30 . 7. Find the area of a sector determined by θ in problem #6. 8. Sketched below is a portion of the graph of which trigonometric function? = x y 4 1 cos 2 1 1 = = x y 2 1 cos 4 1 = π 4 π 2 1 1

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MA 15400 Practice Final Exam 4/09 3 9. The graph of y = 3 + sin x (Choose all the correct answers.) I. crosses the y -axis at 3 II. crosses the x -axis at multiples of π III. is always above the x -axis IV. has period 2 π A. I, II B. I, III, IV C. I, II, IV D. II, IV E. None of the above.
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pf - MA 15400 Practice Final Exam Purdue Department of...

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