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A line makes angle a,b,c,d with the 4 diagonal of a cube, then prove that cos^2a+cos^2b +cos^2c+cos^2d=4/3

A line makes angle a,b,c,d with the 4 diagonal of a cube, then prove that cos^2a+cos^2b +cos^2c+cos^2d=4/3

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
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