Question

how do i go forward with this

Answer 1

why do u keep closing them ? :P

Answer 2

i can't post the picture

Answer 3

did u click on "Attach File"

Answer 4

yes i can't do it

Answer 5

yes now i can ... so how can i go forward with this @hartnn

Answer 6

there is a formula for angle between vectors

Answer 7

cos theta = a.b / (|a||b|)

Answer 8

oh ok

Answer 9

so find dot product

and magnitude of each vector

Answer 10

how can i simplify this: (-1+squareroot of 2) + (1+squareroot of 2) + square root of 2

Answer 11

-1 and +1 gets cancelled

Answer 12

total 3 sqrt 2