Question

does number 9 equal 18

Answer 1

I assume there is an image associated with this problem?

Answer 2

yea

Answer 3

Can you take a screenshot or upload it?

Answer 4

yea

Answer 5

https://ibb.co/mFAcmn idk if u can see the url

Answer 6

So the measurements of angles add up to 360 degress I believe.

Answer 7

Now what you would have to do is add it all up and find the missing angle measurement

Answer 8

No I was wrong. They are up to 180 degrees. I'm really tired, I apologize

Answer 9

Add*

Answer 10

Wait I read your question wrong. You wanted your answer to be checked, correct?

Answer 11

yea

Answer 12

so you said it would be 18?

Answer 13

This is really confusing me now

Answer 14

all i did was cos; 46/48 and divide them and then on the chart it said 18 but I thinks thats wrong

Answer 15

It says the answer is 18?

Answer 16

yea

Answer 17

Hmm, I get 16.6

Answer 18

how

Answer 19

\[\cos \theta = \frac{ 46 }{ 48 }\]

\[\theta = \cos^{-1} (\frac{ 46 }{ 48 })\]

\[\theta = 16.6\]

Answer 20

https://ibb.co/d0V2mn this the chart thing i used

Answer 21

Oh, I thought this was a study guide of some sort and 18 was the correct answer.

Answer 22

ok

Answer 23

In the answer key

Answer 24

Why are you referring to that chart?

Answer 25

our teacher gave it us

Answer 26

Are you allowed to use a calculator?

Answer 27

yea

Answer 28

can u help with 7

Answer 29

Mhm, that's how you would solve for #9 then.

\[Cosine = \frac{ Adjacent }{ Hypotenuse }\]

That's why I did

\[\cos \theta = \frac{ 46 }{ 48 }\]

46 = adjacent side to the angle
48 = the hypotenuse

Answer 30

Sure, post a new question

Answer 31

it was on the same picture question 7

Answer 32

This looks like Special Right Triangles. Does that sound familiar to you?

Answer 33

yea

Answer 34

do u use the 30 one?

Answer 35

Eh, actually, lets just do Pythag. We don't know for sure which one it is without an angle being given

Answer 36

\[(3)^2 + x^2 = (2 \sqrt 3)^2\]
\[9 + x^2 = 4 \times 3 \]
\[9 + x^2 = 12\]
\[x^2 = 3\]
\[x = \sqrt 3\]

Answer 37

It was a 30-60-90

Answer 38

lol

Answer 39

This is pretty easy though.

Answer 40

how did get the answer 3

Answer 41

Subtracted 9 from both sides

Answer 42

oh so the answer just 3

Answer 43

the answer is sqrt 3

Answer 44

ok thx