Pre-Calc Exam Notes 154

# Pre-Calc Exam Notes 154 - 154 Appendix A Answers and Hints...

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Unformatted text preview: 154 Appendix A: Answers and Hints to Selected Exercises Chapter 4 Section 4.1 (p. 89) 1. π /45 3. 13 π /18 5. − 3 π /5 7. 36 ◦ 9. 174 ◦ Section 4.2 (p. 94) 1. 9.6 cm 3. 11 π in 5. 54.94 in 7. 12.86 ft 8. 34.18 9. 38.26 11. 3.392 and 9.174 12. 3.105828541 Section 4.3 (p. 98) 1. 1.512 cm 2 3. 24.5 m 2 5. 269.1 cm 2 7. 5 cm 2 9. π /2 cm 2 11. 0.017 cm 2 13. 21.46 15. 48.17 17. 0.522 m 2 19. Sector area is quadrupled, arc length is doubled. Section 4.4 (p. 102) 1. ν = 6 m/sec, ω = 1.5 rad/sec 3. ν = 6.6 m/sec, ω = 0.94 rad/sec 5. ν = 3.75 m/sec, ω = 1.875 rad/sec 7. 3.375 rad 9. 32 rpm and 21.33 rpm 11. 40.84 in/sec Chapter 5 Section 5.1 (p. 108) 13. Partial answer: sec θ = OQ Section 5.2 (p. 118) 1. amplitude = 3, period = 2, phase shift = 0 3. amplitude = 1, period = 2 π /5, phase shift = − 3/5 5. amplitude = 1, period = 2 π /5, phase shift = − π /5 7. amplitude = 1, period = π , phase shift = 3 π /2 9. amplitude undefined, period = π /2, phase shift = 3 π /2...
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## This note was uploaded on 01/21/2012 for the course MAC 1130 taught by Professor Dr.cheun during the Fall '11 term at FSU.

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