Trigonometry Examples

\cos (10 π)

$\cos (10 π)$

Step 1

Subtract full rotations of

2 π

$2 π$ until the angle is greater than or equal to

0

$0$ and less than

2 π

$2 π$ .

\cos (0)

$\cos (0)$

Step 2

The exact value of

\cos (0)

$\cos (0)$ is

1

$1$ .

1

$1$