Trigonometry Examples

$\tan (\frac{9}{4} \cdot π)$

Step 1

Combine $\frac{9}{4}$ and $π$ .

$\tan (\frac{9 π}{4})$

Step 2

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

$\tan (\frac{π}{4})$

Step 3

The exact value of $\tan (\frac{π}{4})$ is $1$ .

$1$