Question

( A-(3,4,5) )
( B=(6,7,-3) )
( |overrightarrow{A B}|=sqrt{(6-3)^{2}+(7-4)^{2}+(-3-5)^{2}} )
( =sqrt{9+9+64} )
( =sqrt{82} )

# The coordinates of point and Bare (3.4.5)mand (6.7.-3) m. Find to (0) 82 m (D) 46 The unit vector along the force F - (21 +2j+k)vis 11.

Solution