Question

ADD: (image in comments)
A. - 1.24 R + 8.80 U
B. 3.89 R - 4.68 U
C. -4.68 R - 8.80 U
D. 0.15 R + 1.73 U
E. none of these

Answer 1

i have no idea how to solve this so helping walk me through it would be very helpful.

Answer 2

is that "-3 times -125 degrees + 7 times 115 degrees" ?

Answer 3

i'm not sure how it's written even, i'm clueless on this. completely clueless. i attached an image if that helps. can you walk me through it possibly? @DanJS

Answer 4

hmm, i have never seen this notation with the R and U in the answer, give me a minute k

Answer 5

alright, i appreciate it :)

Answer 6

anything at all will help me, if you could walk me through it that would be even better. i appreciate anything!

Answer 7

i see i think now

Answer 8

They want you to write those in RECTANGULAR coordinates right?

Answer 9

yes! I believe so @DanJS

Answer 10

can we figure this one out next @DanJS

Answer 11

yes, i had to look up that notation for the R and U, i believe it is the rectangular coordinates... does that sound familiar

Answer 12

Right and Up?

Answer 13

You have to decompose each of those angles times a number into rectangular coordinates

Answer 14

it does sound familiar, we were learning it in class but i was completely lost.

Answer 15

i honestly never have seen the R U notation, it really isnt a formal thing i have used, but here is what to do...

Answer 16

does that look familiar, for the first term in the addition

Answer 17

do you use sines and cosines?

Answer 18

sin and cos, yes. we're currently learning that along with these.

Answer 19

ok, so the Sin(55) = U / 3
Cos(55) = R / 3

Answer 20

let me work through it a sec and see if this is right,, one min

Answer 21

okay. no problem, this is all just practice for an upcoming test. so it's appreciated