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Mathematics 95 Online
OpenStudy (tester97):

How to do this? @magbak http://prntscr.com/3le6pr

OpenStudy (magbak):

I am here

OpenStudy (anonymous):

How we always do things... with MAGIC :D

OpenStudy (anonymous):

and just coz "I'm curious" and all that, incidentally, do you know what the sine of \(\large \frac{4\pi }{3}\) is?

OpenStudy (tester97):

Nope. I know absolutely nothing /.\

OpenStudy (anonymous):

Well that's not true... for one thing, you know I'm absolutely awesome :3

OpenStudy (magbak):

I am working on it

OpenStudy (tester97):

So the csc of this? \[\frac{- 2 }{ \sqrt{3} }\]

OpenStudy (tester97):

*is this

OpenStudy (anonymous):

no...

OpenStudy (tester97):

am i close though?

OpenStudy (magbak):

it is greater than that

OpenStudy (anonymous):

Where did you even get \[\Large \frac{-2}{\sqrt 3}\]

OpenStudy (magbak):

It is D

OpenStudy (magbak):

the last option

OpenStudy (tester97):

I got that because you said the csc is the reciprocal of sine...........

OpenStudy (anonymous):

Yes, but you don't have that in your choices :) Rationalise :D

OpenStudy (magbak):

I know because when I graph it it ends up being this

OpenStudy (magbak):

it is the reciprocal of sine yes but it is not related you need to evaluate and evaluate means find the exact solution

OpenStudy (anonymous):

haha don't be silly, you cannot evaluate csc without knowing the sine :3

OpenStudy (magbak):

I did that and I got the correct answer or is my answer invalid?

OpenStudy (tester97):

Oh yea peter you cant have a square root in the denominator

OpenStudy (anonymous):

Just because you get the correct answer doesn't mean your method is correct :) I could say I got the correct answer by looking at a bloody crystal ball, I get the correct answer, but what matters is the method :) Now, you can't graph functions like these with the precision of a computer, unless you have one at your disposal ^.^

OpenStudy (anonymous):

oh yeah alley, multiply by \[\Large \frac{\sqrt 3}{\sqrt3}\] to rationalise.

OpenStudy (magbak):

qwll I have a graphing calculator and most Algebra 2 students are required to have 1

OpenStudy (anonymous):

peace, @magbak let's not discuss it any further... also, to be fair, you DID just give out the answer, which isn't allowed on openstudy... stay your excitement next time, ok? :)

OpenStudy (magbak):

i can use Geogebra or a graphing calculator or i can use the graphing calculator to evaluate for me there are somany ways to find the answer without the hassle that converting to sin has.

OpenStudy (tester97):

So it would be this? \[\frac{ -2\sqrt{3} }{ 3 }\]

OpenStudy (magbak):

Sorry @PeterPan i ment no harm and i apologize was just trying to help.

OpenStudy (magbak):

yes

OpenStudy (anonymous):

lol @magbak, I said let's not discuss it any further, but since you insist... I strongly believe simply KNOWING what the sine of the angle is and then just taking a reciprocal... has far LESS hassle than having to open up some software and/or a graphing calculator... just your pen necessary, right? :/ Oh well, good job, Alley :)

OpenStudy (magbak):

sincere apologies my fine sir.

OpenStudy (tester97):

Thanks guys ;)

OpenStudy (tester97):

I have a few more want to help?

OpenStudy (magbak):

No prob bae tag me if you need more.

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