Trigonometry Examples

$\sin (30)$

The supplement of $\sin (30)$ is the angle that when added to $\sin (30)$ forms a straight angle ( $180 °$ ).

$180 ° - \sin (30)$

The exact value of $\sin (30)$ is $\frac{1}{2}$ .

$180 - \frac{1}{2 °}$

To write $180$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$180 \cdot \frac{2}{2} - \frac{1}{2 °}$

Combine $180$ and $\frac{2}{2}$ .

$\frac{180 \cdot 2}{2} - \frac{1}{2 °}$

Combine the numerators over the common denominator.

$\frac{180 \cdot 2 - 1}{2 °}$

Simplify the numerator.

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Multiply $180$ by $2$ .

$\frac{360 - 1}{2 °}$

Subtract $1$ from $360$ .

$\frac{359}{2 °}$