Calculus Examples

$2 π - 2 \cos (2 π)$

Step 1

Subtract full rotations of $2 π$ until the angle is greater than or equal to $0$ and less than $2 π$ .

$2 π - 2 \cos (0)$

Step 2

The exact value of $\cos (0)$ is $1$ .

$2 π - 2 \cdot 1$

Step 3

Multiply $- 2$ by $1$ .

$2 π - 2$

Step 4

The result can be shown in multiple forms.

Exact Form:

$2 π - 2$

Decimal Form:

$4.28318530 \dots$