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Precalculus Examples

Popular Problems

Expand the Trigonometric Expression sin(x-y)

$\sin (x - y)$

Step 1

Apply the difference of angles identity.

$\sin (x) \cos (y) - \cos (x) \sin (y)$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$

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