SOLUTION: Find the length of a if angle A= 62 degrees, b = 15, and c = 21. Enter the numerical answer only rounded to the nearest hundredth.

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Question 760927: Find the length of a if angle A= 62 degrees, b = 15, and c = 21. Enter the numerical answer only rounded to the nearest hundredth.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find the length of a if angle A= 62 degrees, b = 15, and c = 21. Enter the numerical answer only rounded to the nearest hundredth.
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Use the Cosine Law.
a%5E2+=+b%5E2+%2B+c%5E2+-+2bc%2Acos%28A%29