Mathematics - 3D Coordinate Geometry Question with Solution | TestHub

Mathematics3D Coordinate GeometryCoordinates of a point in space, Direction cosines,Easy2 minPYQ_2017

MathematicsEasysingle choice

Three lines are drawn from the origin $O$ with direction cosines proportional to (1,-1,1) (2,-3,0) and $(1, 0, 3) .$ The three lines are

Answer:

Solution:

$Δ = 121 - 1 - 3 0 103$ $= 1 (- 9 - 0) - (- 1) \cdot (6 - 0) + 1 (0 - (- 3))$ $= - 9 + 6 + 3 = 0$ since, $Δ = 0$ $∴$ Lines are coplanar.

Stream:WBJEESubject:MathematicsTopic:3D Coordinate GeometrySubtopic:Coordinates of a point in space, Direction cosines,

⏱ 2mℹ️ Source: PYQ_2017

Loading discussions...