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Cash Watkins
Mathematics
3 November, 17:22
What is the reference angle in degrees for 31π 6?
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Tamia Dougherty
3 November, 17:47
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Okay - so 12pi/6 = 360. We need to make 31pi/6 between 0pi/6 and 12pi/6 in order to obtain the reference angle. So let's do that.
31pi/6 - 12pi/6 = 19pi/6
19pi/6 - 12pi/6 = 7pi/6
The reference angle in radians is 7pi/6, but it wants degrees - so we convert to degrees using 180/pi.
7pi/6 * 180/pi = 210 degrees
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