SOLUTION: In triangle ABC, given the following measures, find the measure of the missing side a=14.2, c=13.9, m of angle B=27.7

Algebra ->  Triangles -> SOLUTION: In triangle ABC, given the following measures, find the measure of the missing side a=14.2, c=13.9, m of angle B=27.7      Log On


   



Question 144885: In triangle ABC, given the following measures, find the measure of the missing side a=14.2, c=13.9, m of angle B=27.7
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Use the cosine law:
c%5E2+=+a%5E2+%2B+b%5E2+-+2abcos%28C%29%29 where C is the angle between the 2 known sides. In this case the angle is between the 2 sides tho it's called B.
Make and Excel sheet to solve these, and other trig problems, so you don't have to do the same thing over and over.
Side b = 6.73290519