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Co - ordinate Geometry 3D Geometry

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If projection of any line on co-ordinate axis 3, 4, and 5, then its length is

A. 12

B. 50

C. 5√ 2

D. 3√ 2

E. None of the above

View Answer

Correct choice: C

Explanation:

Let d be the length of line, then projection on x-axis = dl = 3, projection on y-axis = dm = 4 and projection on z-axis = dn = 5.

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Eamcet Mathematics Co - ordinate Geometry 3D Geometry

Eamcet Mathematics
Co - ordinate Geometry 3D Geometry