Trigonometry Examples

$r = \sqrt{2^{2} + 1^{2}}$

Step 1

Raise $2$ to the power of $2$ .

$r = \sqrt{4 + 1^{2}}$

Step 2

One to any power is one.

$r = \sqrt{4 + 1}$

Step 3

Add $4$ and $1$ .

$r = \sqrt{5}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$r = \sqrt{5}$

Decimal Form:

$r = 2.23606797 \dots$

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