Question

Are the given vectors normal?

a=(5,-2) and b=(6,15)

Answer 1

@tHe_FiZiCx99

Answer 2

i think you only need to check if the dot product is zero, because "normal" in this case means "perpendicular"

Answer 3

\[<5,-2>\cdot<6,15>=5\times 6+(-2)\times 15\] if you get zero, then "normal"

Answer 4

which of course you do in this case since it is \(30-30=0\)

Answer 5

Omg had no idea you responded. Thank you! So what you're basically saying is that it is normal since it equals zero?

Answer 6

since the dot product is zero, then they are normal

Answer 7

now I see. Thank you so much!

Answer 8

yw