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Math C30 Final Exam You have 2.5 hours to complete this exam. Name __________________________________ Teacher ________________________________ Period ________ Date _______________ Page 1 of 15 PART I: Multiple Choice Enter the CAPITAL letter of the response that corresponds to the correct answer on the answer sheet provided. (30 marks) 1) 2) 3) 4) 5) 6) The locus of points equidistant from a point and a line is a(an) ****. A. circle B. hyperbola C. ellipse D. parabola The set of all points in a plane equidistant from a given point is a(an) ****. A. parabola B. circle C. ellipse D. hyperbola The figure represented by x2 + 3y2 + 6x - 12y = 14 is a(an) ****. A. parabola B. circle C. ellipse D. hyperbola The equation for the circle with centre (-3,0) and radius of 3 is ****. A. x2 + y2 + 3x = 9 B. x2 + y2 + 6x = 9 C. x2 + y2 + 3x = 0 D. x2 + y2 + 6x = 0 The graph of the parabola 4y = -2y2 - x - 3 will be a curve that opens A. to the left B. to the right C. upward D. downward The equation of a parabola with focus (-4, -3), and directrix x 2 is A. y 1 ( x 3) 2 1 12 B. y 1 ( x 3) 2 1 12 C. x 1 ( y 3) 2 1 12 D. x 1 ( y 3) 2 1 12 Page 2 of 15 7) 8) 9) An example of a quadrantal angle is ****. A. 670° B. 640° C. 630° D. 610° If (6, 8) is a point on the terminal arm of angle , drawn in standard position, then sin is equal to A. 0.8000 B. 0.6000 C. 8.0000 D. 6.0000 cos 45 is equal to A. 2 2 B. 1 C. –1 10) 11) D. 2 If θ is an angle in standard position where sin θ < 0 and tan θ > 0, then the terminal arm of θ lies in quadrant ****. A. I B. II C. III D. IV If sin 12 and is an acute angle, then cos is equal to 13 A. 5 12 B. 5 13 C. 13 12 D. 12 35 12) A. to the left 3 C. 3 to the left 13) 14) 15) 16) 17) Page 3 of 15 The phase shift of y 3 cos(3x ) is B. to the right 3 D. 3 to the right The reference angle associated with 186° is **** degrees. A. 6 B. 74 C. 106 D. 254 If the angle θ is in standard position, and 90° < θ < 180°; which of the following trigonometric functions have negative values? A. sin θ and cos θ B. sin θ and tan θ C. tan θ and cos θ D. cos θ Two ways of describing the heading/bearing for the line of travel in the diagram are ***. A) 210° or 330° B) W30°S or 210° C) S60°W or 210° D) S60°W or 240° 30° The period of the function y = 4 cos ¼ x is ****. A. 8π B. 4π C. 2 3 D. 3 If csc θ = 5/3 and tan θ < 0, then sec θ = ****. A. 5/4 B. 4/5 C. -3/5 D. -5/4 Page 4 of 15 18) 19) 20) 21) 22) Which of the following is an equation of an asymptote for y = tan x? A. x=0 B. y=0 C. x= 2 D. y= 2 The graph shown BEST represents the equation of *****. A) y sin 2 x B) y cos 2 x C) 1 y sin x 2 D) 1 y cos x 2 Triangle ABC, with A = 30° and b = 10 cm would have two solutions if the value of side a, in cm, was equal to ****. A. 4 B. 5 C. 8 D. 11 The area of a triangle ABC with b = 4 cm, c = 5 cm and A = 63° is **** cm2. A. 17.82 B. 9.08 C. 8.91 D. 4.54 If points P (1,-4) and Q (9,-4) are endpoints of a diameter of a circle, then the center of the circle is at****. A. (-1,0) B. (5,-4) C. (5,0) D. (-5,-4) Page 5 of 15 ( x 2) ( y 1) 1 , are at 5 6 2 23) 24) 25) The foci of the conic whose equation is A. (2 11,1) B. (2 11,1) C. (2,1 11) D. (2,1) The vertices of the ellipse given by 4 x 2 25 y 2 16 x 150 y 141 0 are A. (2,-2) and (2,8) B. (0,-2) and (0,8) C. (-3,3) and (7,3) D. (-3, 0) and (7,0) 1 The amplitude and period of the graph of y 2 cos x are: 3 A. amplitude = 2; period is 6 C. amplitude = 26) Express 1 ; period is 2 3 B. amplitude = 2; period is 1 3 D. amplitude = 2; period is 3 sin 2 in simplest form 2 sin 1 cos 2 A. 2 sin 27) 2 B. sin 2 C. cos The solution to the system of equations x2 4 y 3x 2 y 2 1 D. 1 represents the intersection points of A. an ellipse and a line B. a line and a parabola C. a parabola and a hyperbola D. a hyperbola and a circle 28) Page 6 of 15 The maximum number of intersection points between a circle and an ellipse is A. 1 29) 32) 34) 3 2 B. 3 4 C. 1 4 D. 3 2 cot B) sin C) cos D) sec If you decide something by looking for a pattern and then making a prediction, you are using A) inductive reasoning B) deductive reasoning C) mathematical deduction D) interpretive reasoning How many counterexamples are required to disprove a theory? A) 33) D. 4 tan csc = *****. A) 31) C. 3 The numerical value of cos 2 30 is A. 30) B. 2 0 B) 1 C) 2 D) 3 Which of the following could represent an odd number? A) 2 x2 6 x 4 B) 2 x2 x 4 C) 2x2 6x 1 D) 2 x2 6 x 2 Sam has discovered that the induction step of his proof is not valid. What does he know? A) His hypothesis must be incorrect. B) His basis step is incorrect. C) His deductive step is wrong. D) All of the above. Page 7 of 15 PART II: Show all work in the space provided. Chapter 1: Circular Functions 2 1) a) Express in degrees. ( /1) 5 b) Express 225° in radians. Leave your answer in terms of π. ( /1) 2) Convert 11.5235 to degrees, minutes, and seconds. ( /1) 3) Evaluate the following using exact values. ( /5) a) cos 60° b) sin 300° c) tan 135° d) csc π Page 8 of 15 2 e) sec 3 4) Find θ for the following if 0< θ 360°. Round to the nearest degree ( /8) a) sin b) cos 1 2 2 2 c) sin cos sin 0 d) 2sin 2 3sin 1 0 5) A Ferris Wheel with a diameter of 12 m makes one revolution every 30 seconds. What is the linear speed of a section of the rim wheel? (give answer in m/s correct to two decimal places) ( /2) Page 9 of 15 Chapter 2: Graphs of Circular Functions 1) For the following, list the amplitude, period, phase shift and vertical shift. Then graph the function. ( /5) 1 y 3cos x 2 2 Amplitude = _____________ Period = _____________ Phase shift = _____________ Vertical shift = _____________ 2) Write an equation for the sine function with the following properties. ( /2) amplitude = period = 2π Phase shift = 1 2 6 Chapter 3: Triangles 1) A vertical pole 3 m tall casts a shadow 1.8 m long. What is the angle of elevation of the sun? ( /3) Page 10 of 15 2) In ABC, a = 2 m, b = 3 m, C = 30°. Find the area of ABC. 3) Find the indicated part of ABC. Give all answers to one decimal place. ( /4) a) a = 6 cm, b = 10 cm, C = 60. Find c. b) b = 4 m, c = 2 m, B = 48. Find C. ( /2) Chapter 4: Identities 1) Express the following as a single trig ratio of a single angle, then evaluate, using exact values. ( /4) a) sin 70° cos 20° + cos 70° sin 20° b) cos2 15 - sin2 15 Page 11 of 15 2) a) If α is a first quadrant angle and sin α = 3/5, find cos α. ( /2) b) If β is a second quadrant angle and sin β = 5/13, find cos β. ( /2) c) Use parts a) and b) to find sin (α + β). ( /2) 3) Prove the following identities: ( /9) a) sin x cos x cot x 1 sin 2 x b) tan x(sin x cot x cos x) 2sin x Page 12 of 15 c) sin y sin y cos y sin y 3 2 Chapter 5: Conics 1) Find the centre and radius of the circle given by the equation x2 + y2 - 8x + 6y - 24 = 0. ( /3) Centre = Radius = 2) Find each of the following for the parabola x 2 1 2 y 3 and graph it with 20 everything labeled. ( /7) focal length (p) = ____________ vertex = ___________________ focus = ____________________ directrix = __________________ axis of symmetry = ___________ 3) Page 13 of 15 For the following system of equations, identify each conic, state the number of possible answers, then solve the system. ( /3) x 2 y 2 25 x2 y 5 0 4) Conic: _______________ Conic: _______________ x 3 Graph the ellipse 16 2 y 2 25 Number of solutions: ____________ Solution set:___________________ 2 1 and find: ( /5) center = ___________________ foci = ___________________ vertices (major axis) = ___________________ Page 14 of 15 Chapter 6: Proof 1. Use mathematical induction to prove: ( /3) 1 4 7 . . . (3n 2) 2. n(3n 1) 2 Use integer properties to show that the product of any 2 consecutive numbers is even. ( /2) Page 15 of 15 Name: ________________ Teacher: _____________ Math C30 Multiple Choice Answer Sheet 1. A B C D 18. A B C D 2. A B C D 19. A B C D 3. A B C D 20. A B C D 4. A B C D 21. A B C D 5. A B C D 22. A B C D 6. A B C D 23. A B C D 7. A B C D 24. A B C D 8. A B C D 25. A B C D 9. A B C D 26. A B C D 10. A B C D 27. A B C D 11. A B C D 28. A B C D 12. A B C D 29. A B C D 13. A B C D 30. A B C D 14. A B C D 31. A B C D 15. A B C D 32. A B C D 16. A B C D 33. A B C D 17. A B C D 34. A B C D