Question

Inscribed angles help please.
http://gyazo.com/f21d5a3edb12d480742a7eebbfe7cd40

Answer 1

@e.mccormick Hello! Would you mind helping me real quick? Sorry to bother you.

Answer 2

@Hero Hello! Would you mind helping maybe? Sorry to bother you though!

Answer 3

Here is a reference to all the inscribed angle formulas:
http://www.regentsprep.org/Regents/math/geometry/GP15/CircleAngles.htm

Answer 4

I've read sites like that and I only get more confused, thank you though. I appreciate it.

Answer 5

Well, it comes down to using the correct formula.

Now, one thing to work out is what that \(110^\circ\) is for.

Answer 6

I'm not quite sure what it would be for. I'm extremely lacking in the math area.

Answer 7

Now, one thing you can learn from that page is this:

Answer 8

Now, that \(S^\circ\) looks like it is just a portion of that. But hard to say if it is to scale or what.

Answer 9

Okay.. I think I understand that much.

Answer 10

AH! OK, I see what the 110 is for!

That arc. From that, you can find the angle opposite. Then s = 90 - angle opposite the 110.

Answer 11

Uh, I may get that. I thnk.

Answer 12

So that brings to this:

If I have angle A and intercepted arc S, then \(\measuredangle A = \dfrac{1}{2}S \)

Answer 13

So can you work it from there?

Answer 14

I don't know, I'm still confused. I'm really sorry about that. I don't really understand exactly what I'm meant to plug in and such.

Answer 15

You need to take what is given and use it to find what you can. Each step is a step towards the solution.

First, look at the formula there: \(\measuredangle A = \dfrac{1}{2}\overset{\frown}{S}\). What can you use that and what is given to find?

Answer 16

110 = 1/2 S ??

Answer 17

Not quite. The arc is S. Since your problem already used S, I should have used some different letter... But this is what you can find:

\(A=\dfrac{1}{2}110^\circ\)