Give the name of law that can be used first to solve the
Answer to Problem 2OE
The law of cosines is used for SAS (side-angle-side) measurement.
Explanation of Solution
Given information: The given measurement is SAS (side-angle-side).
Calculation: Since the given triangle has SAS (side-angle-side) measurement. And the given triangle has the case of side-angle-side where (A) is the included angle between the given two sides. Therefore the law of cosines can be used first to determine the included angle (A) between them and then other formulas can be used to solve the given triangle.
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