SM3H 3.18 odd answers 1. 3(cos 90° + π sin 90°) 3. 4(cos 120° + π sin 120°) 5. 11(cos 200° + π sin 200°) 7. 5 2 9. π§1 π§2 +π β5β3 2 = 14(cos 155° + π sin 155°) π§1 2 = 3 (cos(β30°) + π sin(β30°)) π§2 2 = (cos(30°) β π sin(β30°)) 3 11. π§1 π§2 1β5π 2 13. 5 + π, 15. β β2 2 +π β2 2 17. β4 β 4π 3 19. π§1 = β2 (cos 3 π§2 = β2 (cos 4π 3 2π 3 + π sin + π sin 2π ) 3 4π ) 3 3 π§3 = β2(cos 2π + π sin 2π) 21. 1.629 β .52π β.364 + 1.67π β1.265 β 1.151π π 5 π 23. π§1 = β2 (cos 30 + π sin 30) 5 13π 30 + π sin 13π ) 30 5 25π 30 + π sin 25π ) 30 5 37π 30 + π sin 37π ) 30 5 49π 30 + π sin 49π ) 30 π§2 = β2 (cos π§3 = β2 (cos π§4 = β2 (cos π§5 = β2 (cos 25. 1 1 β3 2 1 β3 2 β2 + π β2 β π or
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