In vector multiplication: proof of dot product formula in orthogonal form

why are the direction of the unit vectors not considered?
pls answer

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

if they have a finite resultant

i believe the answer is electric potential.

explanation: