MEDAL AND FAN WILL BE GIVEN
Help with SIN, COS, TAN Benchmark
In △JKL, solve for x.

- Aizhalee

MEDAL AND FAN WILL BE GIVEN
Help with SIN, COS, TAN Benchmark
In △JKL, solve for x.

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- katieb

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- Aizhalee

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- Aizhalee

Is is Cos(27) = x/34 . what do I do afterwards and I am not too good with doing on a calculator help please ?

- CGGURUMANJUNATH

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## More answers

- marihelenh

It is supposed to be Tan(27)= 34/x. I can go into more detail if you would like on why it is like that.

- Aizhalee

Oh Ok sorry for the mistake , so yes thank you for helping what is the next step please ?

- marihelenh

First, do you have a calculator that will let you solve for it?

- Aizhalee

yes I do

- marihelenh

You have to solve for x, so multiply both side by x.
That should leave you with Tan(27) x = 34

- marihelenh

Divide both sides by Tan(27).
You will get x= 34/Tan(27)

- Aizhalee

0.5095

- marihelenh

How did you enter it into your calculator? You should be able to do 34/tan(27) and get the answer.

- Aizhalee

I have 66.73

- marihelenh

Yep!! That's correct!

- Aizhalee

Yipee ♥ Thanks a lot :D

- Aizhalee

God bless . thanks for your help

- marihelenh

Of course. It wasn't a problem. I just hope you were able to follow what was happening.

- Aizhalee

Yes But I have one more question , can you help me with it please

- marihelenh

Let me see it. Hopefully I will be able to.

- Aizhalee

In △PQR, find the measure of ∡P.

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- marihelenh

Do you have a guess already?

- Aizhalee

cos

- marihelenh

Yep. You use cosine.

- Aizhalee

yes so 57.6 over 33.8

- marihelenh

It is the other way around. 33.8/57.6 The adjacent side goes over the hypotenuse.

- Aizhalee

Ok so 33.8 divided by 57.6

- marihelenh

Yes. Divide it first. You will get something along the lines of .5868...
After that, press 2ND on your calculator, then COS, then 2ND again, and the press the (-) button at the bottom. It will put in your previous answer and should give you the correct answer for the problem.

- Aizhalee

im using my computer calculator .

- marihelenh

Ok give me a sec then...

- Aizhalee

ok thank you and take your time

- marihelenh

I couldn't get it on the computer calculator, but if you go to web2.0calc.com/ you should be able to use a scientific calculator that will let you do the 2ND function. If you get there, just follow the same steps as before.

- Aizhalee

i dont understand this at all with the cal

- marihelenh

Divide first.

- Aizhalee

i did , you said press 2nd and I did , but when I pressed 2nd I do not see cos

- Aizhalee

i see "acos"

- marihelenh

Press acos.

- Aizhalee

yes I pressed it

- Aizhalee

now where is the (-) located ?

- marihelenh

After you press acos, just hit = and you should get the answer. Sorry for the confusion.

- Aizhalee

54.06

- marihelenh

Yep, so when you round it, you get 54.1.

- Aizhalee

rounded to 56.1 ? Thanks :) so much and its totally fine

- marihelenh

Didn't it say on your question 54.1?

- Aizhalee

yes 54.1 * my mistake

- marihelenh

Oh ok, just checking

- Aizhalee

ok thanks a lot :D take care God bless i appreciate it so much

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