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Mathematics 13 Online
OpenStudy (explainitlikeimfive):

Express the sum or difference as a product. sin 4x - sin 6x

OpenStudy (explainitlikeimfive):

OpenStudy (anonymous):

\[\sin 4x-\sin 6x=-\left( \sin 6x-\sin 4x \right)=-2\cos \frac{ 6x+4x }{ 2 }\sin \frac{ 6x-4x }{ 2 } \] \[=-2\cos 5x \sin x\]

OpenStudy (explainitlikeimfive):

So I reckon I'd pick C?

OpenStudy (anonymous):

yes

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