1. is an acute angle of a right triangle. If sin find cos and tan . A. cos and tan B. cos and tan C. cos and tan D. cos and tan Hint 2. Find the value of x. Round to the nearest tenth. A. 131.6 B. 2.1 C. 78.8 D. 20.3 Hint 3. What is sin if is in standard position, its terminal side lies in quadrant IV, and sec ? A. B. C. D. Hint 4. Find the exact value of sin 405°. A. B. C. D. - 1 Hint 5. Determine the solution of XYZ. Round measures of sides to the nearest tenth. A. Y = 26.9°, Z = 58.1°, z = 9.4 B. Y = 26.9°, Z = 58.1°, z = 4.9 C. There is no solution. D. Y = 58.1°, Z = 26.9°, z = 9.4 Hint 6. Determine the period of the function shown below. A. 1 B. C. D. -1 Hint 7. Find sin A. B. C. D. Hint 8. What is the degree measure of the angle through which the hour hand on a clock rotates from 4:00 P.M. to 8:00 P.M.? A. 120° B. –120° C. –90° D. 90° Hint 9. What is the radian measurement of 5°? A. B. C. D. Hint 10. Which of the following situations will not result in one single solution? A. A is obtuse, a > b B. A is acute, a < b sin A C. A is acute, a = b sin A D. A is acute, Hint 11. Suppose C = 44°, a = 6 and b = 9. Find A if a is opposite A. A. 85.7° B. 94.3° C. 6.27 D. 41.7° Hint 12. What method should be used when we have one side and one angle opposite that side? A. cannot be determined from given information B. law of cosines, then law of sines C. law of cosines only D. law of sines Hint 13. What is the period of the function represented by the graph? A. 50 B. 25 C. 150 D. 10 Hint 14. Simplify [tan (Arc tan x)] × [(Arc sin (sin y)]. A. B. x C. xy D. x2y2 Hint