Question

Help please!

Answer 1

Use the dot product to determine which of the following vector pairs are orthogonal.
a) v=<-124,188> and w=<88,64>
b) v=<-5,5> and w=<1,1>

Answer 2

@dan815 @IrishBoy123 @TheSmartOne @SolomonZelman @mathmath333 @mathmate @kaylamarie081 @shifuyanli

Answer 3

what is the dot product?

Answer 4

I think it's a formula.

Answer 5

@freckles @jimboonman @peytonamberxoxo @jabez177 @ayyookyndall @puppylover0617 @quickthing

Answer 6

@jim_thompson5910

Answer 7

If you have two vectors v and w, where,

v = <a,b>
w = <c,d>

then

v dot w = a*c + b*d

the first components (a and c) multiply. So do the second components (b and d). You then add up the products

Answer 8

Rule: if v dot w = 0, then vector v is orthogonal to vector w.

Answer 9

I got 1,120

Answer 10

for which part?

Answer 11

Well, I got -10,912 for multiplying a and c then I got 12,032 for multiplying b and d. Then I added them up to get 1,120.

Answer 12

that is correct

Answer 13

So the first set isn't orthogonal since they don't add up to zero?

Answer 14

yes, the dot product isn't zero so they aren't orthogonal.

Answer 15

I understand how to do this now so I can do the second set of numbers. Thank you so much!

Answer 16

np