Trigonometry Examples

$\sqrt{\frac{21}{25}}$

Step 1

Rewrite $\sqrt{\frac{21}{25}}$ as $\frac{\sqrt{21}}{\sqrt{25}}$ .

$\frac{\sqrt{21}}{\sqrt{25}}$

Step 2

Simplify the denominator.

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Step 2.1

Rewrite $25$ as $5^{2}$ .

$\frac{\sqrt{21}}{\sqrt{5^{2}}}$

Step 2.2

Pull terms out from under the radical, assuming positive real numbers.

$\frac{\sqrt{21}}{5}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\frac{\sqrt{21}}{5}$

Decimal Form:

$0.91651513 \dots$