Trigonometry Examples

$2 (\frac{13}{16}) (\frac{- \sqrt{87}}{16})$

Step 1

Cancel the common factor of $2$ .

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Step 1.1

Factor $2$ out of $16$ .

$2 (\frac{13}{16}) \cdot \frac{- \sqrt{87}}{2 (8)}$

Step 1.2

Cancel the common factor.

$2 (\frac{13}{16}) \cdot \frac{- \sqrt{87}}{2 \cdot 8}$

Step 1.3

Rewrite the expression.

$\frac{13}{16} \cdot \frac{- \sqrt{87}}{8}$

Step 2

Multiply $\frac{13}{16}$ by $\frac{- \sqrt{87}}{8}$ .

$\frac{13 (- \sqrt{87})}{16 \cdot 8}$

Step 3

Simplify the expression.

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Step 3.1

Multiply $- 1$ by $13$ .

$\frac{- 13 \sqrt{87}}{16 \cdot 8}$

Step 3.2

Multiply $16$ by $8$ .

$\frac{- 13 \sqrt{87}}{128}$

Step 3.3

Move the negative in front of the fraction.

$- \frac{13 \sqrt{87}}{128}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$- \frac{13 \sqrt{87}}{128}$

Decimal Form:

$- 0.94731193 \dots$