Trigonometry Examples

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

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

Step 1

Evaluate

\arccos (- \frac{4}{5})

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

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

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

Step 2

Combine

\frac{1}{2}

$\frac{1}{2}$ and

2.49809154

$2.49809154$ .

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

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

Step 3

Divide

2.49809154

$2.49809154$ by

2

$2$ .

\sin^{2} (1.24904577)

$\sin^{2} (1.24904577)$

Step 4

The result can be shown in multiple forms.

Exact Form:

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

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

Decimal Form:

0.9

$0.9$