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OpenStudy (anonymous):
Write the expression as either the sine, cosine, or tangent of a single angle. sin 52° cos 13° - cos 52° sin 13°
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OpenStudy (cwrw238):
use the identity sin ( A - BI) = sin A cosB - cos A sin B
OpenStudy (anonymous):
got it. thanks
OpenStudy (cwrw238):
yw
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