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OpenStudy (anonymous):
What is the exact value of sin pi/2 as found on the unit circle?
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OpenStudy (anonymous):
pi/2 = 90 degrees |dw:1385240464908:dw|
OpenStudy (anonymous):
x is cos y is sin since the ordered pair of pi/2 (or 90 degrees) is (0,1) what is the y value?
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