Algebra Examples

$\arccos (\sin (\frac{5 π}{2}))$

Step 1

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

$\arccos (\sin (\frac{π}{2}))$

Step 2

The exact value of $\sin (\frac{π}{2})$ is $1$ .

$\arccos (1)$

Step 3

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

$0$