Trigonometry Examples

$2 (\frac{10}{11}) (- \frac{\sqrt{21}}{11})$

Step 1

Multiply $2 (\frac{10}{11})$ .

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Step 1.1

Combine $2$ and $\frac{10}{11}$ .

$\frac{2 \cdot 10}{11} \cdot (- \frac{\sqrt{21}}{11})$

Step 1.2

Multiply $2$ by $10$ .

$\frac{20}{11} \cdot (- \frac{\sqrt{21}}{11})$

Step 2

Multiply $\frac{20}{11} (- \frac{\sqrt{21}}{11})$ .

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Step 2.1

Multiply $\frac{20}{11}$ by $\frac{\sqrt{21}}{11}$ .

$- \frac{20 \sqrt{21}}{11 \cdot 11}$

Step 2.2

Multiply $11$ by $11$ .

$- \frac{20 \sqrt{21}}{121}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$- \frac{20 \sqrt{21}}{121}$

Decimal Form:

$- 0.75745052 \dots$