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+1 vote
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in Applications of Vector Algebra by (49.4k points)
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If vector(a,b,c) are three non-coplanar vectors and vector(p,q,r) are defined by the relations vector p = vector(b x c)/vector[a,b,c], vector q = vector(c x a)/vector[a,b,c], vector r = vector(a x b)/vector[a,b,c], then vector(p.(a + b)) + vector(q.(b + c)) + vector(r(c + a)) = ...

(a) 0 

(b) 1 

(c) 2 

(d) 3

1 Answer

+1 vote
by (48.7k points)
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Best answer

The answer is (d) 3

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