document.write( "Question 957420: in triangle ABC, a = 7, b = 5, and c = 8. What is the value of cosC? \n" ); document.write( "
Algebra.Com's Answer #585039 by Alan3354(69443)\"\" \"About 
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in triangle ABC, a = 7, b = 5, and c = 8. What is the value of cosC?
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\n" ); document.write( "Use the Cosine Law.
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\n" ); document.write( "\"c%5E2+=+a%5E2+%2B+b%5E2+-+2ab%2Acos%28C%29\"\r
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