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OpenStudy (anonymous):
Half angle problem
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OpenStudy (anonymous):
Sin(7pi/8)
OpenStudy (anonymous):
Is this value they gave me theta or half of theta
OpenStudy (anonymous):
Or is it sin(theta) and I need to plug theta into the problem
OpenStudy (phi):
Unless you know radians very well, I would change to degrees. It becomes more obvious. 7pi/8 is 315/2 = 157.5 degrees. that is in the second quadrant, and corresponds to 22.5 degrees, which is 1/2 of 45 degrees
OpenStudy (anonymous):
So theta is 315?
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OpenStudy (anonymous):
And 7pi/8 * 180/pi is 157.5
OpenStudy (phi):
yes |dw:1418994873462:dw|
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