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Mathematics - 3D Coordinate Geometry Question with Solution | TestHub

Mathematics3D Coordinate GeometryCoordinates of a point in space, Direction cosines,Medium2 minPYQ_2020

MathematicsMediumsingle choice

The direction co-sines of the line which bisects the angle between positive direction of $Y$ and $Z$ axes are

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Answer:

Solution:

(C) Vector parallel to bisector of angle between positive $Y$ and $Z$ direction. $= \hat{j} + \hat{k}$ and its magnitude is $1 + 1 = 2$ $∴$ Direction cosines $= (0, \frac{1}{2}, \frac{1}{2})$

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

⏱ 2mℹ️ Source: PYQ_2020

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