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what's the general question ? ^_^

whats R? Magnitude of R and direction of R.

how can we determine the magnitude of R and direction of R if there's no problem lol?

i can show you a sample of a previous problem and how it's done.

that's the question? :)

LOL >_< my bad, I thought those were the choices ^^"

lol no
do you know how to do it?

I'll give it a try? :)

tnx :)

np ^_^

angles were given

how about for this problem?

A 3m south of east
B 3m north
C 3m 30 degrees north east
D 3m 50 degrees south west

this is all that's given

hmm, that means that you have to figure out the angles from the given

B is easy, 3 m north , angle = 90 degrees

hmm yea and A? 45 degrees?

since they haven't given you the angles, yes you can assume that A = 45 degrees

and now? how much is R?

well it's not my homework :) it's my friends homework and I have no idea how to do it :)

lol >_<

Alright, let's try to solve it together ^_^

she solved it and got 2.79m 1.65 degrees north of east and she just wants to check if it's ok

yep i agree so far

R= 3 cos 45 + 3 cos 30 - 3 cos 50)i + (3 sin 45 + 3 sin 90 + 3 sin 30 - 3 sin 50)j

lol, wait, I've messed it up

yeah, hold on :)

ok

R = 1.76 i - 3.32 j
I might have some calculation mistakes, it happens ^_^

so this is it?

\[R = \sqrt((1.76)^2 + (3.32)^2)\]
= 3.74 m

alright thank you so very much!

arctan = -62.07

np :)

thank you thank you
so her answer was wrong?

I'm not sure what was her answer lol , I just followed the steps and given :)

ok thank you!

np ^_^, but I'm not sure though ^^"

is there an online calculator where i could check this?

there's your hand-calculator? :)

i dont have it :/

I did lol, that's what I got, answer above

you can check with your calculator if you want :)

oh ok thank you again :)

lol, np ^_^