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OpenStudy (anonymous):
cos(5π/3)=_____ A. -(radical)2/2 B. ((radical)2)/2 C. ((radical)3)/2 D. 1/2
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OpenStudy (anonymous):
i think its b.
OpenStudy (anonymous):
do you know the reference angle for 5pi/3?
OpenStudy (anonymous):
no
OpenStudy (anonymous):
ok... the reference angle for 5pi/3 is pi/3. do you know what quadrant 5pi/3 is in?
OpenStudy (anonymous):
no, the question is all that i was given
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