Trigonometry Examples

$\arctan (- \frac{2}{2})$

Step 1

Cancel the common factor of $2$ .

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Step 1.1

Cancel the common factor.

$\arctan (- \frac{2}{2})$

Step 1.2

Rewrite the expression.

$\arctan (- 1 \cdot 1)$

Step 2

Multiply $- 1$ by $1$ .

$\arctan (- 1)$

Step 3

The exact value of $\arctan (- 1)$ is $- \frac{π}{4}$ .

$- \frac{π}{4}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$- \frac{π}{4}$

Decimal Form:

$- 0.78539816 \dots$