Math Analysis Ch. 5 – 6 Review Highlight the topics below as you feel comfortable with each topic. Use your notes, practice worksheets, and homework to study! Use your TRIG BOOK to help you with formulas. I’ve included a few extra practice problems too. MOST problems are no calculator on the test. Keep that in mind as you study! Chapter 5 o 5.1 – 5.3 Trig Review o Unit circle o Reference angles o Quadrants (all students take calculus) o Finding theta given a problem like sin = **** o 5.4 Graphing sine, cosine, tangent o Graph at least two cycles and label all axes o Period and amplitude o Domain and range o 5.5 Graphing cosecant, secant, cotangent o Domain and range o Asymptotes o 5.6 Phase Shift o y = a sin (bx – c) + d Know how a, b, c, and d change the graph. Chapter 6 o 6.1 – 6.2 Inverse trig o Domain and range for inverse functions – note the restrictions o True and false statements based on domain and range of inverse functions o Solving inverses o 6.3 Trig Proofs o Pythagorean identities like cos2 + sin2 = 1 o Helpful tricks: factoring, multiplying by conjugates, common denominator o 6.4 – 6.5 Angle Formulas – MEMORIZE! o Sum and difference formulas for sin, cos, tan o Double and half angle formulas for sin, cos, tan o 6.7 – 6.8 Trig Equations Find the exact value for each expression below. 1. cos-1 0 2. tan1 ( 3) 3 4. csc sin 1 2 12 5. tancos 1 13 3. cot 1 ( 1) 3 6. cos 1 tan 4 4 7. cos 1 cos 3 8. cos 12 9. tan 8 Verify the following identity. cos( ) cot tan 10. cos sin Find the exact value of each expression. 5 4 11. sin cos 1 cos 1 13 5 12 12. cos 2 tan 1 5 3 4 12 when and cot when , find the exact values for… 2 3 2 5 13. tan( ) 14. sin 15. cos 2 2 Given tan Solve each equation on the interval [0, 2π). 16. sec2 θ = 4 17. sin(3θ) = 1 18. 8 – 12 sin2 θ = 4 cos2 θ 19. cos(2θ) = sin θ Use a calculator to solve on the interval [0, 2π). Round to the nearest hundredth. 20. cos θ = 0.6 21. cot θ = 2 Find the reference angle for the given angle θ in standard position. (Find θ′.) 22. 295° 23. -490° 10 5 24. 25. 3 8 θ′ = _________ θ′ = _________ θ′ = _________ θ′ = _________ Find the exact value of each expression. KNOW THE UNIT CIRCLE!!!!!! 26. cos 150° 27. sin 225° 28. tan (-30°) 29. csc(90°) 30. sec(270°) 32. sin 3 33. cos 52 34. cot 116 35. sec( 73 ) 36. csc(5 ) 31. cot 45° 37. tan 72 Find values for θ where… 38. 0° < θ < 360° to the nearest tenth of a degree 39. 0 < θ < 2π to the nearest hundredth of a radian sin θ = -0.3568 cot θ = 1.2479 θ = ___________________ θ = ___________________ In which quadrant does the terminal side of θ lie from standard position? 40. tan θ > 0 and csc θ < 0 41. sec θ < 0 and π < θ < 2π 42. cot 3 5 5 and sin 70 14 Given the following information, find the exact value of the six trig functions. 43. (5, 9) is a point on the terminal side of θ. 44. The terminal side of θ intersects the unit circle at Note: x = 5 and y = 9 (NOT cos = 5 and sin = 9) 2 5 5 . Note: since this is ON the unit , 5 5 circle, the x and y values are the cos and sin values. sin θ = ______ cos θ = ______ tan θ = ______ csc θ = ______ sec θ = ______ cot θ = ______ sin θ = ______ cos θ = ______ tan θ = ______ 7 2 and cos θ > 0 2 csc θ = ______ sec θ = ______ cot θ = ______ 19 46. 6 sin θ = ______ cos θ = ______ tan θ = ______ sin θ = ______ cos θ = ______ tan θ = ______ csc θ = ______ sec θ = ______ cot θ = ______ csc θ = ______ sec θ = ______ cot θ = ______ 45. csc Graph at least two cycles of the following functions. 48. g ( x ) 3 csc( 2x ) 47. f ( x ) tan 14 x Period:_______ Period:_______ Domain:____________________________ Domain:____________________________ Range: _____________________________ Range: _____________________________