Question

Given u= [1,2,3] and v=[2,-2,-6] use the dot product to find the unt vector perpendicular to both.

Answer 1

Find the norm of each vector and then it take its reciprocal and time it by -1.

Because the rule of perpendicular lines states in order for two lines to be perpendicular then their slopes ( in this case the magnitude) has to be equal to -1.

I hope I helped!

Answer 2

whats norm?

Answer 3

The magnitude of the vector. Sheklek mesh qar2aa 2el so2aaal 7ateetee heik

Answer 4

ok thanks!

Answer 5

Anytime :)

Answer 6

wait can i check my work with u?

Answer 7

yeah sure no worries. Solve it here so I can review your work.

Answer 8

ok so for [u]=\[\sqrt{14}\] and for [v]=\[\sqrt{44}\]

Answer 9

ok so it would be -1/\[\sqrt{14}\] and -1/\[\sqrt{44}\]

Answer 10

Its should be :)

Answer 11

ok what do i do after this

Answer 12

Thats it you get the magnitude of the vectore perpendicular to it.

Answer 13

so those are the unit vectors perpendicular to both?