Trigonometry Examples

$- 15 π$

Step 1

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

$(- 15 π) \cdot \frac{180 °}{π}$

Step 2

Cancel the common factor of $π$ .

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Step 2.1

Factor $π$ out of $- 15 π$ .

$π \cdot - 15 \cdot \frac{180}{π}$

Step 2.2

Cancel the common factor.

$π \cdot - 15 \cdot \frac{180}{π}$

Step 2.3

Rewrite the expression.

$- 15 \cdot 180$

Step 3

Multiply $- 15$ by $180$ .

$- 2700$

Step 4

Convert to a decimal.

$- 2700 °$