Question

=

Answer 1

@theEric

Answer 2

Hi! I can try to help intermittently. I have homework I have to do for tomorrow and I have a meeting for something soon.

@johnny101 , are you using vector notation at all?

Like, in class, have you seen something like \(\vec v=\hat i\ a+\hat j\ b\)?

Answer 3

We covered vectors but notations like that no

Answer 4

Okay! I have to think for a moment, then....

Answer 5

I have 30^2+40^2-2(30)(40)cos i just dont know what angle to use

Answer 6

any idea?

Answer 7

I'm looking at something, to check your work.

But I think you're using law of cosines and the angle will be in between the two vectors.