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1 Name: Date: 1. Find the exact value of the given trigonometric function of the angle θ shown in the figure. (Use the Pythagorean Theorem to find the third side of the triangle.) Find: sinθ c a θ a a = Solve for y. y 60 y = 17 3 y = y = 17 y = 17 3 y = Use a calculator to evaluate the trigonometric function. Round your answer to four decimal places. (Be sure the calculator is set to the correct angle mode.) sin ( 112 ) Page 1
2 4. Use a graphing utility to graph the function below. Be sure to include at least two full periods. Page 2
3 5. Determine the quadrant in which the angle lies. 150 Quadrant IV Quadrant III Quadrant I Quadrant II 6. Determine two coterminal angles (one positive and one negative) for the given angle. Give your answer in degrees. 7. Rewrite the given angle in radian measure as a multiple of π. (Do not use a calculator.) 270 π 3π 3π 5π 2 2π Rewrite the given angle in degree measure. (Do not use a calculator.) 5π Evaluate the trigonometric function using its period as an aid. 11π cos Page 3
4 10. Find the exact value of the given trigonometric function of the angle θ shown in the figure. (Use the Pythagorean Theorem to find the third side of the triangle.) Find: secθ c a θ a a = State the quadrant in which θ lies. cot( θ ) < 0 and sec( θ ) < 0 Quadrant IV Quadrant I Quadrant III Quadrant I or Quadrant III Quadrant II 12. Use a calculator to evaluate the trigonometric function. Round your answer to four decimal places. (Be sure the calculator is set to the correct angle mode.) csc ( 230 ) Which of the following is equivalent to the expression below? Page 4
5 14. If 4 3 csc x = and cos x 0 3 <, evaluate the function below. 15. Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent. 16. Verify the identity shown below. Page 5
6 17. Solve the following equation. 18. Solve the following equation. Page 6
7 19. Find all solutions of the following equation in the interval [ ) 0, 2π. 20. Determine the area of a triangle having the following measurements. Round your answer to two decimal places. A= 119, b= 6, and c = 12 (d1) sq. units sq. units sq. units sq. units sq. units 21. Given C = 128, a = 13.9, and c = 9.3, use the Law of Sines to solve the triangle (if possible) for the value of b. If two solutions exist, find both. Round answer to two decimal places. b = 4.78 b = 2.34 and 6.66 b = 8.03 b = 1.41 and 6.79 not possible 22. Given C = 130, a = 9.93, and c = 18, use the Law of Sines to solve the triangle (if possible) for the value of b. If two solutions exist, find both. Round answer to two decimal places. b = 3.39 b = and 4.03 b = 0.58 and 2.73 not possible b = Page 7
8 23. Given a = 6, b = 7, and c = 8, use the Law of Cosines to solve the triangle for the value of B. Round answer to two decimal places. C b a Figure not drawn to scale A c B Given a = 5, b = 10, and c = 6, use the Law of Cosines to solve the triangle for the value of B. Round answer to two decimal places A vertical pole 30 feet tall stands on a hillside that makes an angle of 19 with the horizontal. Determine the approximate length of cable that would be needed to reach from the top of the pole to a point 51 feet downhill from the base of the pole. Round answer to two decimal places feet feet feet feet feet Page 8
9 26. Sketch the graph of the function. Page 9
10 Page 10
11 27. Identify the graph of the function. Page 11
12 Page 12
13 28. Sketch the graph of the function. Page 13
14 Page 14
15 = Rewrite the exponential equation 64 1 log = log3125 = 3 1 log2 3 8 = in logarithmic form. log5 25 = 2 log16 4 = Rewrite the logarithmic equation 1 log = in exponential form. = 1/ = 1 = 1 = 1 = 31. Identify the x-intercept of the function y=+ log x The function has no x-intercept. 32. Write the logarithmic equation ln 5 = in exponential form e = = = e = e = Evaluate the function f( x) = 1.568lnx at x= Round to 3 decimal places. (You may use your calculator.) undefined 34. Solve the equation log(1 x) = log(1) for x using the One-to-One Property The equation has no solution. 35. Rewrite the logarithm log6 25 in terms of the natural logarithm. ln13 ln 3 ln 3 ln13 ln3 ln13 ln13 log3 e ln Evaluate the logarithm 1/3 log using the change of base formula. Round to 3 decimal places Page 15
16 37. Expand the expression as a sum, difference, and/or constant multiple of logarithms. 38. Condense the expression log5x + log56 3 log(6 x ) log6 3x to the logarithm of a single term. log3 7 x log x 3 7 log 6 ( x + 4 ) 39. x 1 = 8 Solve 2 for x no solution Solve ln x ln11 = 0 for x. 9 3, 3 9 e 3/2 e no solution 41. Approximate the solution to ln 5x = 3.2. Round to 3 decimal places Find the standard form of the parabola with the given characteristic and vertex at the origin. focus: (0, 9) x 2 = 36y x 2 = 9y x 2 = 9y y 2 = 36x y 2 = 9x Page 16
17 43. Find the standard form of the parabola with the given characteristics. directrix: x = 4 vertex: ( 5, 1) (x 5) 2 = 36(y 1) (y 1) 2 = 36(x 5) (x + 5) 2 = 36(y + 1) (y + 1) 2 = 36(x + 5) (x 1) 2 = 36(y 5) 44. Match the graph with its equation. 45. Find the standard form of the equation of the ellipse with the given characteristics. vertices: ( 4, 3), ( 4, 15) minor axis of length 4 ( ) 2 ( ) 2 x+ 5 y ( x 9 ) ( y 5) + = 1 + = ( x 5 ) ( y ) ( x+ 9 ) ( y+ 5) + = 1 + = ( x 5 ) ( y 9) + = Page 17
18 46. Find the standard form or the equation of the ellipse with vertices (±6, 0) and eccentricity x y x y x y x y = 1 + = 1 + = 1 + = x y + = e = 5. Page 18
19 Answer Key 1. C 2. A 3. D 4. A 5. B 6. Answers may vary. One possible response is given below. 7. D 8. E 9. A 10. B 11. C 12. D 13. A 14. C 15. A B 18. C 19. A 20. B 21. E 22. C 23. D 24. C 25. A 26. A 27. B 28. B 29. A 30. C 31. B 32. A 33. C 34. B 35. A 36. D 37. D Page 19
20 38. B 39. C 40. B 41. B 42. A 43. E 44. D 45. B 46. D Page 20
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