Find the direction cosines of the line passing through two points P(-6 – McqOptions

MCQOPTIONS

1.	Find the direction cosines of the line passing through two points P(-6,7,3) and Q(3,-2,5).
A.	( frac{2}{ sqrt{166}}, frac{-9}{ sqrt{166}}, frac{2}{ sqrt{166}} )
B.	( frac{9}{ sqrt{166}}, frac{-7}{ sqrt{166}}, frac{2}{ sqrt{166}} )
C.	( frac{9}{ sqrt{66}}, frac{-9}{ sqrt{66}}, frac{2}{ sqrt{66}} )
D.	( frac{9}{ sqrt{166}}, frac{-9}{ sqrt{166}}, frac{2}{ sqrt{166}} )
Answer» E.

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