In Exercises 1-4, find each value of in degrees (0o < < 90o) and radians

In Exercises 1-4, find each value of  in degrees (0o < θ < 90o) and radians (0 < θ < π / 2) without using a calculator.
1.
a. sin θ = 1 / 2
b. csc θ = 2
2.
a. cos θ = √2 / 2
b. tan θ = 1
3.
a. sec θ = 2
b. cot θ = 1
4.
a. tan θ = √3
b. csc θ = √2