Trigonometry Examples

$- 180$

Step 1

To convert degrees to radians, multiply by $\frac{π}{180 °}$ , since a full circle is $360 °$ or $2 π$ radians.

$- 180 ° \cdot \frac{π}{180 °}$ radians

Step 2

Cancel the common factor of $180$ .

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Step 2.1

Factor $180$ out of $- 180$ .

$180 (- 1) \cdot \frac{π}{180}$ radians

Step 2.2

Cancel the common factor.

$180 \cdot - 1 \cdot \frac{π}{180}$ radians

Step 2.3

Rewrite the expression.

$- 1 \cdot π$ radians

Step 3

Rewrite $- 1 π$ as $- π$ .

$- π$ radians