SOLUTION: In ∆ABC, if the lengths of a, b, and c are 22.5 centimeters, 18 centimeters, and 13.6 centimeters, respectively, what are m B and m C to two decimal places

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Question 1027220: In ∆ABC, if the lengths of a, b, and c are 22.5 centimeters, 18 centimeters, and 13.6 centimeters, respectively, what are m B and m C to two decimal places
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
The law of cosines solved for the cosine is



Substitute:







The formula for C is



You do that one.

Edwin
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