Trigonometry Examples

\sec (120)

$\sec (120)$

Step 1

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

- \sec (60)

$- \sec (60)$

Step 2

The exact value of

\sec (60)

$\sec (60)$ is

2

$2$ .

- 1 \cdot 2

$- 1 \cdot 2$

Step 3

Multiply

- 1

$- 1$ by

2

$2$ .

- 2

$- 2$

[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$