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Home > INT3 > Chapter 8 > Lesson 8.3.4 > Problem 8-148

8-148.

Which of the following triangles can be solved by first using the Law of Cosines?

  1. Triangle A,B,C, labeled as follows: side, AB, 15, side, AC, 17, angle, a, 42 degrees.

  1. Triangle A,B,C, labeled as follows: side, AB, 15, side, AC, 17, angle, c, 56 degrees.

  1. Triangle A,B,C, labeled as follows: side, AB, 15, side, AC, 17, angle, b, 82 degrees.

Triangles that have a SSS or SAS given information pattern can be solved by first using the Law of Cosines.