Question

1. For ABC, what is the value of cosC?


1. For ABC, what is the value of cosC?

Answer 1

\[CosC= \frac{adjacent \ side}{hypotenuse}\]

Answer 2

The choices are 0.5, 0.6, 0.8, and 0.9

Answer 3

We aren't going to tell you the answer, only how to solve the question.

Answer 4

I don't know how to solve the problem though.

Answer 5

0.8 100% ;)

Answer 6

thanks alirezamemarian!

Answer 7

alirezamemarian you should read the Code of Conduct :)

Answer 8

The way I see it the figure is drawn to scale...then Diyadiya's answer should help you further.

Answer 9

Nice job giving him the answer, but are you going to do that for the rest of his life?

Answer 10

That's why we teach people how to do things instead of give them the answer.

Answer 11

to all!
ok yes! sorry!
it`s better that we show the way of solve,not give them the answer,yes? :)

Answer 12

yes :)

Answer 13

I agree that someone should of showed me how, but No One did.

Answer 14

We were trying to show you ,But someone just gave you the final answer and you were happy with it
If you want to know how i can help you :)

Answer 15

and @ inkyvoyd - I am a girl. :)

Answer 16

I would love to know how.

Answer 17

I didn't want @ali to think I didn't appreciate their help.

Answer 18

ok
\[CosC= \frac{adjacent \ side}{hypotenuse} \]
Do you know which is adjacent side and hypotenuse ?

Answer 19

yes I do.

Answer 20

So what do you get now ?

Answer 21

what do you mean?

Answer 22

\[CosC= \frac{adjacent \ side}{hypotenuse}\]
To find Cos we divide adjacent side by Hypotenuse
Which is adjacent side and hypotenuse in the figure ?

Answer 23

The hypotenuse is the AC line and the adjacent sides are the other sides AB and BC

Answer 24

Okay Hypotenuse is AC and value of AC is also given in the fig which is 90
Here since we are finding Cos C , adjacent side is the side adjacent to angle C ,Which is BC and value of BC is 72

Answer 25

okay

Answer 26

Now can you find CosC ?
just divide adjacent side by hypotenuse

Answer 27

thats is \[\frac{BC}{AC}\]

Answer 28

so it would be 0.8? 72/90

Answer 29

Yes ! Right :)

Answer 30

thanks. i didn't know it was that simple. I couldn't find out how to do it in my book. Thanks for showing me how to do it.

Answer 31

Glad to help :)

and you can keep this in mind while doing these kind of problem

Sine is Opposite over Hypotenuse
Cosine is Adjacent over Hypotenuse
Tangent is Opposite over Adjacent

Answer 32

okay thanks for the help!! ;)

Answer 33

Anytime :)