If a line has direction ratios > , then its direction- cosines will be :

Mathematics · JEE Main · NTA Exams — Three Dimensional Geometry

1. \(<\frac{2}{3}, \frac{1}{3}, \frac{2}{3}>\)
2. \(<\frac{1}{3}, \frac{1}{3}, \frac{1}{3}>\)
3. \(\left\langle\frac{-2}{3},-\frac{1}{3}, \frac{-2}{3}\right\rangle\)
4. \(\left\langle\frac{2}{3},-\frac{1}{3},-\frac{2}{3}\right\rangle\)

Answer

(D) 2 3 ,- 1 3 ,- 2 3

Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.

Related practice questions

• The projections of a vector on the three coordinate axes are 6,-3,2 respectively. The direction cosines of…
• The direction ratios of two parallel lines are 4,-3,-1 , & + _ 1 1+ _ 1 2 . The value of pair ( , ) is
• If a and b are vectors of equal magnitude 2 and α be the angle between them, then magnitude of a + b will be…
• The equation of the plane which is right bisector of the line joining (2, 3, 4) and (6, 7, 8), is :
• The Plane 2x – (1 + λ) y + 3λ z = 0 passes through the intersection of the planes
• If for vectors a and b , a × b = 0 and . b = 0, then
• The length of the perpendicular drawn from the point (2, 1, 4) to the plane containing the lines r =( i + j…
• If | array lll a & a^ 2 & 1+a^ 3 b & b^ 2 & 1+b^ 3 c & c^ 2 & 1+c^ 3 array |=0 and vectors (1, a, a^ 2 ), (1…

More Three Dimensional Geometry questions · Browse all practice questions