SOLUTION: Given the following values, the value of c is ________. b = 4.5 ft a = 10 ft C = 105

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Question 400480: Given the following values, the value of c is ________.
b = 4.5 ft
a = 10 ft
C = 105
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Cosine Law: c%5E2+=+a%5E2+%2B+b%5E2+-+2abcosC
==> c%5E2+=+10%5E2+%2B+4.5%5E2+-+2%2A10%2A4.5cos105
==> c%5E2+=+143.5437141 ==> c = 11.981, to 3 decimal places.