# Thread: Chords in a Circle

1. ## Chords in a Circle

Just a bit confused, I need to find x:

If I were to add a y, then I could do this:
$\displaystyle y=1/2(122+32)$

$\displaystyle y=1/2(154)$

$\displaystyle y=77$

$\displaystyle x=180-77$

$\displaystyle x=103$

If not, is there another way to do it? My book did not cover this.

2. Originally Posted by Lemon
Just a bit confused, I need to find x:

If I were to add a y, then I could do this:
$\displaystyle y=1/2(122+32)$

$\displaystyle y=1/2(154)$

$\displaystyle y=77$

$\displaystyle x=180-77$

$\displaystyle x=103$

If not, is there another way to do it? My book did not cover this.

Looks good to me.

-Dan

3. ## Thanks

Really? One of my friends said I couldn't do that. But I suppose if that's right than that's right. Thanks for confirming it.

4. Where did you get $\displaystyle y=1/2(122+32)$ from?

Just trying to recall geometry myself...

5. What on earth...?

6. Yeah, yeah, how does one explain that ¿?

7. What does 122 stand for?
Why isn't y 122? It's the number of degrees by that angle...

8. Originally Posted by Krizalid
Yeah, yeah, how does one explain that ¿?
Lemon is ... a Hacker ¿?

9. Originally Posted by Pinsky
What does 122 stand for?
Why isn't y 122? It's the number of degrees by that angle...
Hi,

I've attached a more or less exact drawing.