Find the Exact Value arccot(-1/( square root of 3))

$arccot (- \frac{1}{\sqrt{3}})$

Step 1

Multiply $\frac{1}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$arccot (- (\frac{1}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}}))$

Step 2

Combine and simplify the denominator.

Multiply $\frac{1}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$arccot (- \frac{\sqrt{3}}{\sqrt{3} \sqrt{3}})$

Raise $\sqrt{3}$ to the power of $1$ .

$arccot (- \frac{\sqrt{3}}{{\sqrt{3}}^{1} \sqrt{3}})$

Raise $\sqrt{3}$ to the power of $1$ .

$arccot (- \frac{\sqrt{3}}{{\sqrt{3}}^{1} {\sqrt{3}}^{1}})$

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

$arccot (- \frac{\sqrt{3}}{{\sqrt{3}}^{1 + 1}})$

Add $1$ and $1$ .

$arccot (- \frac{\sqrt{3}}{{\sqrt{3}}^{2}})$

Rewrite ${\sqrt{3}}^{2}$ as $3$ .

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{3}$ as $3^{\frac{1}{2}}$ .

$arccot (- \frac{\sqrt{3}}{{(3^{\frac{1}{2}})}^{2}})$

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

$arccot (- \frac{\sqrt{3}}{3^{\frac{1}{2} \cdot 2}})$

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

$arccot (- \frac{\sqrt{3}}{3^{\frac{2}{2}}})$

Cancel the common factor of $2$ .

Cancel the common factor.

$arccot (- \frac{\sqrt{3}}{3^{\frac{2}{2}}})$

Rewrite the expression.

$arccot (- \frac{\sqrt{3}}{3^{1}})$

Evaluate the exponent.

$arccot (- \frac{\sqrt{3}}{3})$

Step 3

The exact value of $arccot (- \frac{\sqrt{3}}{3})$ is $\frac{2 π}{3}$ .

$\frac{2 π}{3}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{2 π}{3}$

Decimal Form:

$2.09439510 \dots$