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Mathematics - 3D Coordinate Geometry Question with Solution | TestHub

Mathematics3D Coordinate GeometryCoordinates of a point in space, Direction cosines,Medium2 minPYQ_2009

MathematicsMediumsingle choice

If the line $OR$ makes angles $θ_{1}, θ_{2}, θ_{3}$ with the planes XOY, YOZ, ZOX respectively, then $cos^{2} θ_{1} + cos^{2} θ_{2} + cos^{2} θ_{3}$ is equal to

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Solution:

If line $OR$ makes angles $θ_{1}, θ_{2}, θ_{3}$ with the planes XOY, YOZ, ZOX respectively, then $cos^{2} θ_{1} + cos^{2} θ_{2} + cos^{2} θ_{3} = 1$

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

⏱ 2mℹ️ Source: PYQ_2009

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