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i don't know how to start..can someone please help..

i am still trying to do it but something is confusing me whats the x?

I don't know; I'm confused as well, where did the x come from? lol

lol i did half of the work but got to an equatoin with x in it ...

Well, I don't know how to do it; where the x come from?
Can you give me a hint how to start?

since*

Hm,okay; I will try from that..

thanks anyway

sorry:( .. im sure the other people viewing would have an idea

i can do part b xD do u need help with that?

Nope, only the first one.

ok:)

That's a stupid question.

* problem

may i come here

where the 'x' come from in equation 'a'?

i don't know that is why I'm lost; or probably there's a mistake :/

|dw:1337940741536:dw|

lol, please delete that inky..

|dw:1337940823123:dw|

That's x.

I understand the problem now.

|dw:1337940877496:dw|

|dw:1337941268446:dw|

|dw:1337941693329:dw|

Max I can get is
\[asin(\theta)-(x+a)sin(\phi)=0\]
assuming x was there
|dw:1337941920722:dw|

@.Sam. , that's what I meant... I'm sure that that is x

First, where did sine come from? I havent done geometry in a while..

I've ended up with another solution
\[rcos(90+\phi-\theta)-(x+r)sin(\phi)=0\]

http://www.twiddla.com/847714

I'm lost..

so\[asin(\theta-\phi)-(x+a)\sin \phi=0\]

i assumed that the part of TC that is outside the circle is x ... and it worked!! :D

and then i used the sin rule after finding TBO
O is the center

and TO=x+a

yeah; thank you!

:D

I was using angle JOB lol