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3 July, 12:08

In which quadrant does the terminal side of the angle 387° lie?

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Answers (2)
  1. 3 July, 13:21
    0
    To evaluate the quadrant we first reduce the angle to a smaller angle than 360°:

    387°=360°+27°

    so 387° lies in the same quadrant as 27°

    The angle 27° lies between 0° and 90°, so its terminal side lies in the 1st quadrant.
  2. 3 July, 14:49
    0
    We'll reduce the angle to an angle smaller than 360 degress first. So 387 = 360 * 1 + 27 It is obvious that 387 lies in the same quadrant as 27. But 27 lies between 0 and 90. Hence it lies in the first quadrant.
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