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13 May, 11:03

In what quadrant does the angle - 8pi/5 terminate?

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Answers (2)
  1. 13 May, 11:42
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    72 degrees, 1st quadrant
  2. 13 May, 14:33
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    It ends in quadrant 1.

    Since it's negative you go clockwise from (1, 0). And pi/5 = 36 degrees. 36 * 8 is 288 degrees, and since it's a negative angle, it'll go all the way around the unit circle to the 1st quadrant.
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