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# oddans43 - Odd-Numbered Answers to Exercise Set 4.3 Unit...

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Odd-Numbered Answers to Exercise Set 4.3: Unit Circle Trigonometry Math 1330, Precalculus The University of Houston Solutions to Chapter 4 Exercises 1. (a) (b) (c) 3. (a) (b) (c) 5. (a) (b) (c) 7. (a) x y 30 D 135 D x y 300 D x y x y 3 π 7 4 x y 5 6 x y x y 90 D x y y x 450 D 240 D x y

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Odd-Numbered Answers to Exercise Set 4.3: Unit Circle Trigonometry Math 1330, Precalculus The University of Houston Solutions to Chapter 4 Exercises (b) (c) 9. (a) 310 , 410 , 770 DDD (b) 560 , 160 , 520 11. (a) 81 22 2 ,, 55 5 π ππ (b) 35 222 13. 0 , 90 , 180 , 270 DD D D 15. 791 11 3 , 44 4 4 πππ 17. (a) The reference angle is 60 D , shown in blue below. Continued in the next column… (b) The reference angle is 30 D , shown in blue below. (c) The reference angle is 60 D , shown in blue below. 19. (a) The reference angle is 6 , shown in blue below. (b) The reference angle is 3 , shown in blue below. Continued on the next page… y x 13 6 y x 510 D 60 D x y 240 D 30 D x y 30 D x y 60 D 60 D x y 7 6 6 x y 5 3 3
Odd-Numbered Answers to Exercise Set 4.3: Unit Circle Trigonometry Math 1330, Precalculus The University of Houston Solutions to Chapter 4 Exercises (c)

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oddans43 - Odd-Numbered Answers to Exercise Set 4.3 Unit...

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