Precalculus Examples

$\frac{\sin (x)}{1 + \cos (x)} \cdot \frac{1 - \cos (x)}{1 - \cos (x)}$

Step 1

Cancel the common factor of $1 - \cos (x)$ .

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Step 1.1

Cancel the common factor.

$\frac{\sin (x)}{1 + \cos (x)} \cdot \frac{1 - \cos (x)}{1 - \cos (x)}$

Step 1.2

Rewrite the expression.

$\frac{\sin (x)}{1 + \cos (x)} \cdot 1$

Step 2

Multiply $\frac{\sin (x)}{1 + \cos (x)}$ by $1$ .

$\frac{\sin (x)}{1 + \cos (x)}$