- #1
subzero0137
- 91
- 4
Vectors a and b correspond to the vectors from the origin to the points A with co-ordinates (3,4,0) and B with co-ordinates (α,4, 2) respectively. Find a value of α that makes the scalar product a[itex]\cdot[/itex]b equal to zero, and explain the physical significance.
My attempt:
The scalar product a[itex]\cdot[/itex]b is given by |a||b|cosθ=[itex]5 \sqrt{α^{2}+20}[/itex]cosθ=0, therefore [itex]α=\sqrt{20}[/itex]i. But I don't know the physical significance of this. Please help!
My attempt:
The scalar product a[itex]\cdot[/itex]b is given by |a||b|cosθ=[itex]5 \sqrt{α^{2}+20}[/itex]cosθ=0, therefore [itex]α=\sqrt{20}[/itex]i. But I don't know the physical significance of this. Please help!