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Assume the following angle is in standard position.Which of the following is a positive angle that is coterminal with 11 pie over 7

Choices are ;
 
3 pie over 9
 
-25 pie over 7
 
-3 pie over 7
 
25 pie over 7

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Michael A. | Math/Physics/Science TutorMath/Physics/Science Tutor
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A coterminal angle is one that is shares the same side that makes an angle.  Since they are asking for a POSITIVE angle, we simply rotate another full rotation (360 degrees or 2pi rads) to get to the same side again.
 
Thus, 11pi/7 + 2pi = 11pi/7 + 14pi/7 = 25pi/7
 
The answer is the last one.