InterviewSolution
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InterviewSolution
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If a variable line in two adjacent positions has direction cosines (l,m,n) and (l + delta l, m + delta m, n + delta n) , then show that the small angle delta theta between the two position is given by (delta theta)^(2) = (delta l)^(2) + (delta m)^(2)+ (delta n)^(2) |
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