Trigonometry Examples

$\sin^{2} (\frac{1}{2} \cdot \arccos (- \frac{4}{5}))$

Step 1

Evaluate $\arccos (- \frac{4}{5})$ .

$\sin^{2} (\frac{1}{2} \cdot 2.49809154)$

Step 2

Combine $\frac{1}{2}$ and $2.49809154$ .

$\sin^{2} (\frac{2.49809154}{2})$

Step 3

Divide $2.49809154$ by $2$ .

$\sin^{2} (1.24904577)$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\sin^{2} (\frac{1}{2} \cdot \arccos (- \frac{4}{5}))$

Decimal Form:

$0.9$