Solve the following equations for 0 360. a. cos ( 20) = 1/2

Solve the following equations for 0° ≤ θ ≤ 360°.

a. cos (θ − 20°) = 1/2

b. tan (θ + 10°) = √3/3

c. sin (θ + 80°) = √2/2

d. tan 2θ = √3

e. sin (1/2­ ) = 1/2

f. cos 2θ = -√3/2

g. sin 3θ = 1/2

h. sin 2θ = 0 

i. tan 3θ = 1