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Cos(A+B)Cos(A-B)

sin α -β is e...

Question

$\sin (α - β)$ is equal to______.

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Solution

From trigonometric identity,
$\sin (α - β) = \sin α \cdot \cos β - \cos α \cdot \sin β$

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Cos(A+B)Cos(A-B)

Standard XII Mathematics

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