Trigonometry Examples

$\sin (- \frac{4}{5})$

Step 1

Since $\sin (- \frac{4}{5})$ is an odd function, rewrite $\sin (- \frac{4}{5})$ as $- \sin (\frac{4}{5})$ .

$- \sin (\frac{4}{5})$

Step 2

The result can be shown in multiple forms.

Exact Form:

$- \sin (\frac{4}{5})$

Decimal Form:

$- 0.71735609 \dots$