Answer:
1. D) Both b) and c)
2. B) Cosine Law
3. B) Find the measures of angles and sides that we can't physically measure.
Step-by-step explanation:
1. To solve non-right triangles we use Sine Law and Cosine Law.
2. If 3 sides lengths were given and you were asked to find an angle, you would use the Cosine Law.
3.Trigonometry is used in real life to find the measures of angles and sides that we can't physically measure.
