Question

Write an equation that could be used to find the value of b.

http://curriculum.kcdistancelearning.com/courses/GEOMx-HS-A09/b/assessments/R-LawsofSinesandLawofCosinesQuiz/Geometry_8.4_Quiz_FINAL_20q.png

Answer 1

a. b^2 = 13^2 + 12^2 – 2(13)(12)(cos 14°)

b. b^2 = 12^2 + 13^2 – 2(12)(13)(cos 41°)

c. b^2 = 12^2 + 13^2 + 2(12)(13)(cos 41°)

d. b^2 = 41^2 + 13^2 – 2(41)(13)(cos 12°)

Answer 2

Law of Cosines...this is a straightforward question.

If you cannot select the correct choice, then restudy the Law of Cosines.