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OpenStudy (anonymous):
rewrite the given expression in terms of the sum or difference of two angles: sin 3.14/7(cos 3.14/2)+cos 3.14/7(sin 3.14/7)
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OpenStudy (anonymous):
is \(3.14\) sposed to be \(\pi\) ?
OpenStudy (anonymous):
2sin A cos B=sin (A+B)+sin(A-B)
OpenStudy (anonymous):
if 3.14=pi cos pi/2=0
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