A point on a line has coordinates (p + 1, p - 3, √2p) where p is any real number. What are the direction cosines of the line?

\(\frac{1}{\sqrt{2}},\frac{1}{2},\frac{1}{2}\)

\(\frac{1}{2},\frac{1}{2},\frac{1}{\sqrt{2}}\)

\(\frac{1}{\sqrt{2}},\frac{1}{2},-\frac{1}{2}\)

Cannot be determined due to insufficient data

A point on a line has coordinates (p + 1, p - 3, √2p) where p is any

1.	A point on a line has coordinates (p + 1, p - 3, √2p) where p is any real number. What are the direction cosines of the line?
A.	\(\frac{1}{2},\frac{1}{2},\frac{1}{\sqrt{2}}\)
B.	\(\frac{1}{\sqrt{2}},\frac{1}{2},\frac{1}{2}\)
C.	\(\frac{1}{\sqrt{2}},\frac{1}{2},-\frac{1}{2}\)
D.	Cannot be determined due to insufficient data
Answer» B. \(\frac{1}{\sqrt{2}},\frac{1}{2},\frac{1}{2}\)

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A point on a line has coordinates (p + 1, p - 3, √2p) where p is any real number. What are the direction cosines of the line?

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