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. /45 3. 13 /18 5. 3 /5 7. 36 9. 174 Section 4.2 (p. 94) 1. 9.6 cm 3. 11 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. /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. = 6 m/sec, = 1.5 rad/sec 3. = 6.6 m/sec, = 0.94 rad/sec 5. = 3.75 m/sec, = 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 = OQ Section 5.2 (p. 118) 1. amplitude = 3, period = 2, phase shift = 0 3. amplitude = 1, period = 2 /5, phase shift = 3/5 5. amplitude = 1, period = 2 /5, phase shift = /5 7. amplitude = 1, period = , phase shift = 3 /2 9. amplitude undefined, period = /2, phase shift = 3 /2...
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