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Using vector.show that angle b/w any …

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Using vector.show that angle b/w any two diagonal of cube is cos-1(1/3)
  • 2 answers

Jagdish Saini 6 years, 7 months ago

L²+m²+n²=1 where L ,m ,n. Are direction cosines which are to be equal according to question the 3L²=1 and the L=m=n=1/root 3

The Unpredictable Guy 6 years, 7 months ago

Assume a cube and finding its diagonals can be a simple way...
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