Solve each equation for 0 ≤ θ ≤ 360. You may need your calculator, but remember that your calculator only gives one answer. Most of these problems have more than one answer. Think about all four quadrants. Homework Help ✎
sin θ = 0.5
cos θ = −0.5
4 tan θ − 4 = 0
3 sin2 θ = 1
Remember the angles from special right triangles.
30° and ?
120° and ?
Simplify the equation first.
This is not one of the special angles.
Use a calculator to find one answer.
Looking at a unit circle may help you find the other answer.
35.26°, 144.74°, 215.26° and 324.76°