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25-11-2015
Mathematics

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

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RasulAli RasulAli

25-11-2015

72 degrees, 1st quadrant

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25-11-2015

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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