if a=9,b=8 and c=x satisfies 3 cosC=2,then -a)x=5b)x=6c)x=4d)x=7 – InterviewSolution

1.	if a=9,b=8 and c=x satisfies 3 cosC=2,then -a)x=5b)x=6c)x=4d)x=7
Answer» So Cos C = 2/3 So, C = cos inv( 2/3) nearly equal to 5 so x= 5

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