Trigonometry Examples

tan (\frac{3 π}{4})

$\tan (\frac{3 π}{4})$

Step 1

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the second quadrant.

- tan (\frac{π}{4})

$- \tan (\frac{π}{4})$

Step 2

The exact value of

tan (\frac{π}{4})

$\tan (\frac{π}{4})$ is

1

$1$ .

- 1 \cdot 1

$- 1 \cdot 1$

Step 3

Multiply

- 1

$- 1$ by

1

$1$ .

- 1

$- 1$