SOLUTION: If a triangle has sides a = 6, b = 15, c = 12, determine angle C.

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Question 977599: If a triangle has sides a = 6, b = 15, c = 12, determine angle C.
Found 2 solutions by Fombitz, solver91311:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use the law of cosines,
cos%28C%29=%28a%5E2%2Bb%5E2-c%5E2%29%2F%282ab%29

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Use the Law of Cosines





Just plug in the numbers and do the arithmetic.

John

My calculator said it, I believe it, that settles it