Trigonometry Examples

$\sqrt{\frac{1 + \frac{12}{13}}{2}}$

Step 1

Write $1$ as a fraction with a common denominator.

$\sqrt{\frac{\frac{13}{13} + \frac{12}{13}}{2}}$

Step 2

Combine the numerators over the common denominator.

$\sqrt{\frac{\frac{13 + 12}{13}}{2}}$

Step 3

Add $13$ and $12$ .

$\sqrt{\frac{\frac{25}{13}}{2}}$

Step 4

Multiply the numerator by the reciprocal of the denominator.

$\sqrt{\frac{25}{13} \cdot \frac{1}{2}}$

Step 5

Multiply $\frac{25}{13} \cdot \frac{1}{2}$ .

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Step 5.1

Multiply $\frac{25}{13}$ by $\frac{1}{2}$ .

$\sqrt{\frac{25}{13 \cdot 2}}$

Step 5.2

Multiply $13$ by $2$ .

$\sqrt{\frac{25}{26}}$

Step 6

Rewrite $\sqrt{\frac{25}{26}}$ as $\frac{\sqrt{25}}{\sqrt{26}}$ .

$\frac{\sqrt{25}}{\sqrt{26}}$

Step 7

Simplify the numerator.

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Step 7.1

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

$\frac{\sqrt{5^{2}}}{\sqrt{26}}$

Step 7.2

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

$\frac{5}{\sqrt{26}}$

Step 8

Multiply $\frac{5}{\sqrt{26}}$ by $\frac{\sqrt{26}}{\sqrt{26}}$ .

$\frac{5}{\sqrt{26}} \cdot \frac{\sqrt{26}}{\sqrt{26}}$

Step 9

Combine and simplify the denominator.

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Step 9.1

Multiply $\frac{5}{\sqrt{26}}$ by $\frac{\sqrt{26}}{\sqrt{26}}$ .

$\frac{5 \sqrt{26}}{\sqrt{26} \sqrt{26}}$

Step 9.2

Raise $\sqrt{26}$ to the power of $1$ .

$\frac{5 \sqrt{26}}{{\sqrt{26}}^{1} \sqrt{26}}$

Step 9.3

Raise $\sqrt{26}$ to the power of $1$ .

$\frac{5 \sqrt{26}}{{\sqrt{26}}^{1} {\sqrt{26}}^{1}}$

Step 9.4

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{5 \sqrt{26}}{{\sqrt{26}}^{1 + 1}}$

Step 9.5

Add $1$ and $1$ .

$\frac{5 \sqrt{26}}{{\sqrt{26}}^{2}}$

Step 9.6

Rewrite ${\sqrt{26}}^{2}$ as $26$ .

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Step 9.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{26}$ as $26^{\frac{1}{2}}$ .

$\frac{5 \sqrt{26}}{{(26^{\frac{1}{2}})}^{2}}$

Step 9.6.2

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{5 \sqrt{26}}{26^{\frac{1}{2} \cdot 2}}$

Step 9.6.3

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

$\frac{5 \sqrt{26}}{26^{\frac{2}{2}}}$

Step 9.6.4

Cancel the common factor of $2$ .

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Step 9.6.4.1

Cancel the common factor.

$\frac{5 \sqrt{26}}{26^{\frac{2}{2}}}$

Step 9.6.4.2

Rewrite the expression.

$\frac{5 \sqrt{26}}{26^{1}}$

Step 9.6.5

Evaluate the exponent.

$\frac{5 \sqrt{26}}{26}$

Step 10

The result can be shown in multiple forms.

Exact Form:

$\frac{5 \sqrt{26}}{26}$

Decimal Form:

$0.98058067 \dots$