Ask your own question, for FREE!
Mathematics 21 Online
OpenStudy (anonymous):

Do I use Sine for this question?

OpenStudy (nincompoop):

no

OpenStudy (anonymous):

This one

OpenStudy (anonymous):

I have to solve for x and not sure how

OpenStudy (nincompoop):

|dw:1393908219720:dw|

OpenStudy (aravindg):

Yes you can use

OpenStudy (anonymous):

How would I do that then?

OpenStudy (aravindg):

sin x=opp side/hypotenuse

OpenStudy (nincompoop):

if one of the sides given is the opposite of the angle of reference then you use SINE if it is adjacent (meaning next to) the angle of reference, then use COSINE

OpenStudy (anonymous):

@nincompoop so how do I use cosine? Do you mind explaining please?

OpenStudy (nincompoop):

look at the diagram I drew

OpenStudy (anonymous):

I know, I see it, I just don't understand?

OpenStudy (nincompoop):

how about you plug the values of your problem into my drawing

OpenStudy (anonymous):

? Like 41 as the hypotenuse, 17 on the side that says cosine, and then x which is a missing angle

OpenStudy (nincompoop):

yehhhhhh coocoobird

OpenStudy (anonymous):

I'm still in the same spot I was before, confused, and nothing figured out. Except, I think I'm supposed to used cosine?

OpenStudy (nincompoop):

did you do it?

OpenStudy (anonymous):

is there a formula I'm supposed to use?

OpenStudy (nincompoop):

now I want you to remember a famous mnemonic SOH CAH TOA Sine = opposite/hypotenuse Cosine = adjacent/hypotenuse Tangent = opposite/adjacent

OpenStudy (anonymous):

I know about that, it's just it makes no sense to me. Everyone says to use it, but I don't understand it very well.

OpenStudy (nincompoop):

well did you memorize it?

OpenStudy (anonymous):

I have it written down already, as for using it and applying it, I have no clue .

OpenStudy (nincompoop):

this is the part where it gets pretty interesting so PAY attention carefully

OpenStudy (nincompoop):

|dw:1393908947667:dw|

OpenStudy (nincompoop):

|dw:1393909047222:dw|

OpenStudy (nincompoop):

|dw:1393909122283:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!