SOLUTION: in triangle ABC, a=8, b=9, c=10. What is the value of Cos C?

Algebra ->  Trigonometry-basics -> SOLUTION: in triangle ABC, a=8, b=9, c=10. What is the value of Cos C?      Log On


   

Question 391460: in triangle ABC, a=8, b=9, c=10. What is the value of Cos C?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Law of Cosines:







Just do the arithmetic.

John

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