Question

Find the value of x. Round to the nearest tenth. The diagram is not drawn to scale.

Answer 1

SOH CAH TOA. Which will you use?

Answer 2

I forgot what SOH CAH TOA means!

Answer 3

SOH = Sine equals Opposite over Hypotenuse
CAH = Cosine equals Adjacent over Hypotenuse
TOA = Tangent equals Opposite over Adjacent.

Answer 4

Oh ok. Here's to refreshing your memory
http://www.mathwords.com/s/sohcahtoa.htm

Answer 5

Will we use CAH = Adjacent over Hypotenuse?

Answer 6

Correct.
So your whole equation by pluggin in your values is

cos(22) = x/11
Multiply both sides by 11

11 x cos(22)=x

Answer 7

11 is the hypotenuse and x is the adjacent so we know we will use CAH

cos(22)=X/11
11cos(22)=x
x=10.199

Answer 8

@EducateMe
Yes i just got the same answer! So is that all i need to do?

Answer 9

Yes

Answer 10

Yea. But round to nearest tenth so 10.2

Answer 11

oh ok @nikato Thank you so much for your help! I wish i could reward you both with medals but it only allows one.

Answer 12

No problem. And it's ok. I medaled Ed