Question

rgwhtrehsdfh

Answer 1

@phi @ash2326 @Luigi0210

Answer 2

@dumbcow @thomaster @cwrw238

Answer 3

did you sketch the two vectors?

Answer 4

no in my book it says that one of the diagonals is u+v so i have one of the lengths which is sqrt10. i cant seem to find the other diagonal though

Answer 5

a sketch always helps

Answer 6

i just cant find the other diagonal

Answer 7

ok so the other diagonal would be v-u? or u-v?

Answer 8

yes

Answer 9

CORRECT.

Answer 10

but which one would it be?

Answer 11

or are they the same?

Answer 12

you can see v+d= u --> d= u-v
or
u+d = v --> d= v-u
the direction is different depending which way we draw it. the length will be the same
either way

Answer 13

ONLY DIRECTION IS DIFFERENT

Answer 14

so you need to find the length of u-v (or v-u)

Answer 15

ok u-v=<1,1> so the length would be sqrt2?

Answer 16

yup its sqrt2. thanks