Trigonometry Examples

$\cot (210)$

Step 1

Find the value using the definition of cotangent.

$\cot (210) = \frac{adjacent}{opposite}$

Step 2

Substitute the values into the definition.

$\cot (210) = \frac{- \frac{\sqrt{3}}{2}}{- \frac{1}{2}}$

Step 3

Simplify the result.

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Step 3.1

Dividing two negative values results in a positive value.

$\frac{\frac{\sqrt{3}}{2}}{\frac{1}{2}}$

Step 3.2

Multiply the numerator by the reciprocal of the denominator.

$\frac{\sqrt{3}}{2} \cdot 2$

Step 3.3

Cancel the common factor of $2$ .

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Step 3.3.1

Cancel the common factor.

$\frac{\sqrt{3}}{2} \cdot 2$

Step 3.3.2

Rewrite the expression.

$\sqrt{3}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\sqrt{3}$

Decimal Form:

$1.73205080 \dots$

Step 5