Question

Quick check? Thank You for helping!

Use the formula v1*v2=|v1||v2|cos theta to find the cosine of the angle between the two vectors (-7,8) and (1,0).

I got cos theta=-7/10.63. Is this correct? Thanks!

Answer 1

@nincompoop @jim_thompson5910

Answer 2

@ganeshie8 @Luigi0210 @pooja195 @Destinymasha

Answer 3

@radar @freckles

Answer 4

@zepdrix

Answer 5

@Whitemonsterbunny17

Answer 6

@mathmate

Answer 7

@Nnesha

Answer 8

I'm getting the same result

Answer 9

Cool, so from there I can take the inverse and get what theta is?

Answer 10

correct

Answer 11

Awesome, thanks for the help!

Answer 12

you're welcome

Answer 13

@Notsephirorth
For this kind of calculations, it is best to leave the radical sqrt(113) because it is the exact value.
10.63 is only an approximation to sqrt(113).

Answer 14

@mathmate Thanks for the advice. Unfortunately I already submitted the assignment. Thanks though!