Question

For a line parallel to \[3\hat{i}+2\hat{j}-8\hat{k}\], what are the direction ratios \[a,b,c\]?

विकल्प

• \[a=-3,\quad b=-2,\quad c=8\]

• \[a=5,\quad b=2,\quad c=-4\]

• \[a=3,\quad b=2,\quad c=-8\]

• \[a=3,\quad b=-2,\quad c=8\]

Answer 1

The direction ratios are the coefficients of \[\hat{i},\hat{j},\hat{k}\] in the direction vector. Therefore they are \[3,2,-8\], respectively.