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The angular separation between the vectors A = 4i + 3j + 5k and B = i – 2j + 2k is (in degrees)(a) 65.8(b) 66.8(c) 67.8(d) 68.8I got this question during an interview.The question is from Cartesian Coordinate System in division Coordinate Systems and Transforms of Electromagnetic Theory

Answer»

Right ANSWER is (c) 67.8

For explanation I would say: The DOT product the VECTOR is 8. Angle of SEPARATION is cos θ = 8/ (7.07 X 3) = 0.377 and θ = cos^-1(0.377) = 67.8.



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