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@jim_thompson5910 I did part a but it came out wrong o.o

Angle: cos(theta)= (u*v)/|u||v|

(u*v) = 17 right?

u dot v should be 13

you lost a negative sign

hrm. Yeah I added 2 instead of subtracting it.

|u| = sq13 ?

yep

how about |v|

|v| = sq26

correct

so then
cos(theta) = 13/(13 sq2)

yep

theta = 45

good

ah k, it was just that 13

component of u along v would be 2.54?

sorry got distracted

let me check

I'm getting 2.5495097567964

did you get about the same?

mhm!

Sorry, I didn't see you had replied.

that's ok I didn't see it earlier too

did you figure out part c)?

Yep I got
5/2i - 1/2 j

I got <2.5, -0.5> which is the exact same

Fantastic :)
the form you wrote it in is probably better haha

either way works

oki! thanks :)