Trigonometry Examples

$\arccos (x) = \frac{12.1}{12}$

Step 1

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

$x = \cos (\frac{12.1}{12})$

Step 2

Simplify the right side.

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Step 2.1

Divide $12.1$ by $12$ .

$x = \cos (1.008\overline{3})$

Step 3

The result can be shown in multiple forms.

Exact Form:

$x = \cos (1.008\overline{3})$

Decimal Form:

$x = 0.53327136 \dots$