Precalculus Examples

$\sin (\frac{1}{2} \cdot \arccos (- \frac{3}{5}))$

Step 1

Evaluate $\arccos (- \frac{3}{5})$ .

$\sin (\frac{1}{2} \cdot 2.21429743)$

Step 2

Combine $\frac{1}{2}$ and $2.21429743$ .

$\sin (\frac{2.21429743}{2})$

Step 3

Divide $2.21429743$ by $2$ .

$\sin (1.10714871)$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\sin (\frac{1}{2} \cdot \arccos (- \frac{3}{5}))$

Decimal Form:

$0.89442719 \dots$