Question

Describe the vector using ordered pair notation.

Answer 1

A.

<43, 46.1>

B.

<58.7, 67.6>

C.

<46.1, 43>

D.

<67.6, 58.7>

Answer 2

@ParthKohli .. a question for you ;)

Answer 3

Thank you.

(not gonna mess up like this now, lol)

Answer 4

yes

Answer 5

All right, do you know what pair notation and vectors are?

Answer 6

No

Answer 7

are you seriously a 14 year old @ParthKohli ? :p

Answer 8

Hmm, a vector is a concept independent of trig. But let me just tell you what pair notation is in this case.

Answer 9

I have 10 days to get nearly a whole coarse done. I have to rush through it or they will fail me.

Answer 10

Do you see that right triangle there?

Answer 11

I will not get into the details of vectors, but pair notation is basically this:

<horizontal side, vertical side>

Answer 12

Can you figure out the horizontal side using trig?

Answer 13

tan, sin that stuff?

Answer 14

inverse

Answer 15

http://www.twiddla.com/1514607

Answer 16

Yes, tan and sin and stuff. So do you see that\[\cos(43^{\circ}) = \dfrac{\rm horizontal~side}{63}\]

Answer 17

this is the formula?

Answer 18

hmm, you know what the definition of cos is?

Answer 19

cosine

Answer 20

hmm, but what is cosine in a right triangle?

heard of SOH CAH TOA?

Answer 21

cos = adjacent side upon hypotenuse..!

Answer 22

exactly, and the adjacent side here is the horizontal side which we want to find for the pair notation.

Answer 23

So what is the value of cos(43 degrees)?

Answer 24

my computer died

Answer 25

RIP in peace

Answer 26

I plugged it in, it is alive once more.

Answer 27

cos(45)=0.555

Answer 28

no cos(45deg)=0.731

Answer 29

I mean 43

Answer 30

cos43 degree = 0.731

Answer 31

anyone there?

Answer 32

@ParthKohli

Answer 33

oh, yes.

0.731 = horizontal side/63

0.731 * 63 = horizontal side

Answer 34

0.731*63=46.06

Answer 35

Yes.

Also, sin(43) = opposite/hypotenuse

the opposite side is the vertical side which we're gonna use. and the hypotenuse is 63.

Answer 36

okay?