Trigonometry Examples

$300 °$

Step 1

Take the cosine of $300 °$ .

$\cos (300 °)$

Step 2

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

$\cos (60)$

Step 3

The exact value of $\cos (60)$ is $\frac{1}{2}$ .

$\frac{1}{2}$