Find all values of θ, if θ is in the interval [0°, 360°) and has the given function value. cos θ = -½

Find all values of θ, if θ is in the interval [0°, 360°) and has the given function value. sec θ = -2√3 3

Evaluate each expression. Give exact values. tan² 120° - 2 cot 240°

Find the reference angle for each angle.

205°

Find the reference angle for each angle.

5π/4

Find the reference angle for each angle.

4.7

Find the reference angle for each angle.

23π/4