in solving this triangle, which law must you use first? law of sines law of cosines
in solving this triangle, which law must you use first? law of sines law of cosines
Answer
Explanation:
Step1: Identify given information
Given three side - lengths 5, 9, 10 of a triangle.
Step2: Recall law - usage conditions
The Law of Sines is used when we know either two angles and one side or two sides and an angle opposite one of them. The Law of Cosines is used when we know three sides of a triangle or two sides and the included angle. Since we are given three side - lengths of the triangle, we use the Law of Cosines first.
Answer:
Law of Cosines