Trigonometry Examples

$\arctan (x) = - 1$

Step 1

Take the inverse arctangent of both sides of the equation to extract $x$ from inside the arctangent.

$x = \tan (- 1)$

Step 2

Simplify the right side.

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Step 2.1

Evaluate $\tan (- 1)$ .

$x = - 0.01745506$

Step 3

Exclude the solutions that do not make $\arctan (x) = - 1$ true.

$No solution$