What are the three situations when you can use the Law of Sines.

1 You are given a triangle with two angles and the included side.

2 You are given a triangle with all three sides.

3 You are given a triangle with two sides and a non-included angle.

4 You are given a triangle all three angles.

5 You are given a triangle with two angles and a non-included side.

The Sine Law has the following equations

sinA/a = sinB/b = sinC/c

From these equations, in order to use the ratios, you must know at least one angle and two sides, or at least one side and 2 angles. It doesn't matter if it's included or not, as long as you are given the angles. Because you could related the three equations with each other.

The answer is 1, 3 and 5.