darioncolby darioncolby
  • 28-06-2017
  • Mathematics
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Cos theta=10/26, theta lies in quadrant IV

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mathmate
mathmate mathmate
  • 28-06-2017
cos(theta)=10/26=5/13
acos(5/13)=1.176 radians = 67.4 degrees
Since it is in the fourth quadrant, the angle is -67.4 degrees
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