For each equation, find two solutions 0 < x < 2, which make the equation true. No calculator necessary. Homework Help ✎
tan x =
sin x = 0
cos x =
What angle has the cosine of negative one half? Think of 30°, 60° right triangles.
x = 120° or 240°
Now convert the angles into radians.
See part (a).
If sin(x) = 0, y = 0
x = 0
Remember the side ratios of 45° right triangles.