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15 February, 23:19

Which equation can be used to determine the reference angle r if 7pi/12?

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  1. 15 February, 23:37
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    7pi/12 > pi/2, This means it is in 2nd quadrant.

    For angles in 2nd quadrant, subtract from pi to get reference angle.

    pi - 7pi/12 = 5pi/12
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