Precalculus Examples

$\sin (25)$

Step 1

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

Step 2

Evaluate $\sin (25)$ .

$0.42261826 \cdot \frac{π}{180}$ radians

Step 3

Multiply $0.42261826 \frac{π}{180}$ .

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Step 3.1

Combine $0.42261826$ and $\frac{π}{180}$ .

$\frac{0.42261826 π}{180}$ radians

Step 3.2

Multiply $0.42261826$ by $π$ .

$\frac{1.32769442}{180}$ radians

Step 4

Divide $1.32769442$ by $180$ .

$0.00737608$ radians