Question

What is the magnitude and direction of GH if G(1, -6) and H(8, 3)?

Answer 1

A) magnitude: 11.4 units: direction: 37.87
B) magnitude: 11.4 units; direction: 52.13°
C) magnitude: 7.62 units; direction 37.87°
D) magnitude: 7.62 units: direction: 52.13°

Answer 2

first what is y2 - y1?

Answer 3

9?

Answer 4

correct...what is x2 - x1?

Answer 5

7?

Answer 6

good correct

now use the formula

\[magnitude = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\]
got it?

Answer 7

11.401754 ?

Answer 8

yup orjust simply 11.4 units

Answer 9

now to find theta

\[\theta = \tan^{-1} (\frac{y_2 - y_1}{x_2 - x_1})\]

Answer 10

so \[\theta = \tan^{-1} (\frac97)\]
got that?

Answer 11

idk how to do that !

Answer 12

you use a calculator :S

Answer 13

there's a button there that looks like \(\tan^{-1}\)

Answer 14

usually it's shift + tan

do you see it?

Answer 15

i have to go now

Answer 16

i hope you figure it out :)

Answer 17

its B . thank you (:

Answer 18

sorry
i cudn't solve it before

Answer 19

i mean sooner