If a line has direction ratios proportional to 2, -1, -2, then what are its direction cosines?

What are the direction cosines ?

If a line has direction ratios 2, –1, –2, then what are its direction cosines?

If a line has the direction ratios 18 , 12 , 4 , then what are its direction cosines?

If a line has direction ratios -18,-12,-4 then what are its direction cosines?

If the direction ratios of a line are proportional to ( 1, -3, 2 ) then its direction cosines are 1/(sqrt(14)),-3/(sqrt(14)),2/(sqrt(14)) b. 1/(sqrt(14)),2/(sqrt(14)),3/(sqrt(14)) c. -1/(sqrt(14)),3/(sqrt(14)),2/(sqrt(14)) d. -1/(sqrt(14)),-2/(sqrt(14)),-3/(sqrt(14))

A vector vec r has length 21 and its direction ratios are proportional to 2,-3,6. Find the direction cosines and components of vec r , is given that vec r Makes an acute angle with x- axis.

What are the direction cosines of Z-axis?

if a line has direction ratio 2,-1,-2,determine its direction cosine

Find the angle between the pairs of lines with direction ratio proportional to: 1, 2, -2, and -2, 2, 1

Find the angle between the pairs of lines with direction ratio proportional to: 2, 2, 1 and 4, 1, 8