Question

· Vector C is the sum of two vectors A and B and
vector D is the cross product of vectors A and B.
What is the angle between vectors C and D?
(a) zero
(b) 60°
(c) 90°
(d) 180°​

Answer 1

Answer:

(c) 90°

Explanation:

Vector C lies in the plane containing Vector A and Vector B because it is the sum whereas Vector D lies perpendicular to the plane containing Vector A and Vector B as it is the cross-product. Therefore, Vector C is perpendicular to Vector D.

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