Asked by raghavendra
if theta is the angle between unit vectors A bar and B bar, then (1-A bar.B bar)/(1 plus A bar.B bar) is equal to
Answers
Answered by
bobpursley
Define u=A.B=ABcosTheta
the problem then is
(1-u)/(1+u)=(1-u)^2/(1-u^2)
the problem then is
(1-u)/(1+u)=(1-u)^2/(1-u^2)
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