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6 Pages

### ReviewFinal

Course: MATH 104, Fall 2009
School: E. Kentucky
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Word Count: 971

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104 Review Math Final Spring 2004 Show all work. Answers without support will not receive credit. Simplify all answers. Answers should be exact unless otherwise stated. 1. Put each equation below in standard form and determine which type of conic section it is. Depending on what type it is find the center, vertices, and/or foci. Sketch the graph. a) x2 - 2x + 8y + 9 = 0 b) 4x2 + y 2 - 8x + 4y - 8 = 0 c) 9x2 - y...

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104 Review Math Final Spring 2004 Show all work. Answers without support will not receive credit. Simplify all answers. Answers should be exact unless otherwise stated. 1. Put each equation below in standard form and determine which type of conic section it is. Depending on what type it is find the center, vertices, and/or foci. Sketch the graph. a) x2 - 2x + 8y + 9 = 0 b) 4x2 + y 2 - 8x + 4y - 8 = 0 c) 9x2 - y 2 + 54x + 10y + 55 = 0 d) y 2 - 4x - 4 = 0 1 e) y = (x2 - 2x + 5) 4 f) 9x2 - 4y 2 + 36x - 24y + 36 = 0 g) 16x2 + 25y 2 - 32x + 50y + 16 = 0 h) y 2 + x2 - 4x + 6y = -5 2. Find the standard form for each of the following. a) Ellipse; Vertices : (-3, 0), (7, 0); Foci : (0, 0), (4, 0) b) Hyperbola; Vertices : (2, 2), (-2, 2); Foci : (4, 2), (-4, 2) 3. Sketch the curve represented by the following parametric equations (indicate the direction of the curve). Then eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. a) x = 3 - 2t, y = 2 + 3t b) x = cos , y = 3 sin c) x = ln 2t, y = 2t2 d) x = 3 + 3 cos , y = 2 + 5 sin 1 e) x = , y = t2 t f) x = 6 cos , y = 6 sin g) x = sec , y = tan h) x = 1 - 2 sin , y = 2 - cos 1 Math 104 Review Final Spring 2004 4. For the following polar coordinates, find the corresponding rectangular coordinates. 3 ) 2 b) (2, - ) 4 a) (4, 7 ) 6 d) (-2, ) 6 e) (1, ) 4 c) (2, f) (-15, 0) 5. For the following rectangular coordinates, find two possible polar representations. a) (0, -9) b) (-3, - 3) c) (2, 2) d) (-1, 5) 1 3 e) (- , - ) 2 2 6. Convert each rectangular equation to polar form. a) x2 + y 2 - 6x = 0 b) 4x + 7y - 2 = 0 7. Convert each polar equation to rectangular form. a) r = 4 cos b) = 5 3 c) r = 10 d) r2 = 3 sin 2 e) r cos = r2 sin f) 4 cos + 2 sin = r 2 Math 104 Review Final Spring 2004 8. Sketch the graph of the following polar equations. a) r = 6 b) = - 5 3 c) r = 6 cos d) r = 3 cos 5 9. The following parametric equations below describe the flight of a baseball t seconds after being hit, where x is the horizontal distance from home plate (in feet), and y is the height (in feet). x = 139.1t y = 3 + 56.2t - 16t2 a) What is the height of the baseball when it is hit? b) What is the maximum height of the baseball? c) A 10 ft outfield fence is a distance of 400 ft from home plate. Is the hit a home run? 10. Find the amplitude, period, phase shift and vertical shift of the following and sketch a graph. a) g(x) = cos(3x - b) f () = sin(5 + ) 2 5 ) 6 c) u(t) = 3 - sin(t + ) 4 d) h(x) = 2 + 5 cos(8x - 4) 11. Given sin = - 7 and is in Quadrant IV, find the values of the other trigonometric functions. 12 12. The height of a radio transmission tower is 70 meters and it casts a shadow of length 30 meters. Find the angle of elevation of the sun. 13. the Verify identities. a) sec2 x cot x - cot x = tan x b) cos3 x sin2 x = (sin2 x - sin4 x) cos x c) 2 sin y cos y sec 2y = tan 2y d) sin(u + v) = tan u + tan v cos u cos v 3 Math 104 Review Final Spring 2004 14. Find the exact value using the appropriate identities. a) sin 5 12 b) cos 285 c) cos 51 - sin 39 15. Find all the solutions of the equation in the interval [0, 2). a) sin x - tan x = 0 b) sin 2x + 2 sin x = 0 c) cos 4x - 7 cos 2x = 8 d) sin 4x - sin 2x = 0 e) 2 sin 2x - 2 = 0 f) cos 4x(cos x - 1) = 0 16. Use the given information to solve the triangles. If two solutions are possible, list each. a) B = 110 , a = 4, c = 4 b) a = 5, b = 8, c = 10 c) B = 25 , a = 6.2, C = 85 17. To approximate the length of a marsh, a surveyor walks 25 meters from point A to point B. Then he turns 65 and walks 300 meters to point C. Approximate the length AC of the marsh. 18. A boat runs in a straight line for 5 kilometers and then makes a 45 turn and runs for another 6 kilometers. How far is the boat from its starting point? n 19. The amount P (in tons) of pollution emitted by a certain factory is given by P = 3.5(1 + cos ), 26 where n is the number of weeks after January 1. Use inverse trigonometric notation to solve for n. 20. Find equations for two distinct ellipses both of which have center at (2, -6), major axis of length 12, and minor axis of length 8. 4 Math 104 Review Final Spring 2004 21. Find the exact value of the following. a) cos(arctan 2) 4 b) cos(arcsin ) 5 c) sin(arctan - 5 ) 12 3 d) tan(arcsin - ) 4 22. A parabolic archway is 12 meters high at the vertex. At a height of 10 meters, the width of the archway is 8 meters. How wide is the ar...

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