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18 August, 16:22

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

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  1. 18 August, 17:57
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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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