Trigonometry Examples

tan (- \frac{3 π}{4})

$\tan (- \frac{3 π}{4})$

Step 1

Add full rotations of

2 π

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

0

$0$ and less than

2 π

$2 π$ .

tan (\frac{5 π}{4})

$\tan (\frac{5 π}{4})$

Step 2

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

tan (\frac{π}{4})

$\tan (\frac{π}{4})$

Step 3

The exact value of

tan (\frac{π}{4})

$\tan (\frac{π}{4})$ is

1

$1$ .

1

$1$