Trigonometry Examples

\cos (\arccos (2.1))

$\cos (\arccos (2.1))$

Step 1

The functions cosine and arccosine are inverses.

2.1

$2.1$

[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$