The angle between the vectors in the following question is:
Correct answer: A. 0°
- A. 0°
- B. 30°
- C. 60°
- D. 90°
Explanation
The following is the solution: Dot product of two vectors A and B is given as: A.B = |A|*|B|* cosθ where θ is the angle between A and B. From this, we can say, cosθ=A.B/|A|∗|B| Let A= 2i+3j+k and B = 4i+6j-k so A.B/|A|∗|B| = 90 cosθ=90, which implies that θ=0.
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About Vectors and Equilibrium
Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
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