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OpenStudy (anonymous):
use a double angle formula to rewrite the following expression -14sin(x)cos(x)
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OpenStudy (anonymous):
-7 sin 2x
jimthompson5910 (jim_thompson5910):
Since sin(2x)=2sin(x)cos(x), this means that -7sin(x)=-14sin(x)cos(x) (I multiplied both sides by -7)
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