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2 February, 13:27

Find three angles, two positive and one negative, that are coterminal with the given angle: - 5π18.

a.-13π18,13π18,31π18

b.-41π18,31π18,67π18

c.-23π18,13π18,31π18

d.-23π18,31π18,67π18

e.-41π18,13π18,67π18 f) none of the above.

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Answers (1)
  1. 2 February, 14:16
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    One would be 2pi - 5pi/18 = 31pi/18

    another positive one is 31pi/18 + 36pi/18 = 67pi/18

    and the negative angle is - 5pi/18 - 36pi/18 = - 41pi/18

    The answer is b
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