## Brittanyy! 2 years ago IS anyone up to really help me out? I got 8 questions right out of 20 and need serious help...anyone up for it?

1. skullpatrol

sure

2. Brittanyy!

okay my first one is In circle O, m<R = 23. Find m<O. (The figure is not drawn to scale.) A) 46 B) 23 D) 157

3. phi

R is an "inscribed angle" (it is on the circle) O is a central angle R's arc is QN O's arc is also QN for the same arc, central angles are twice as big as the inscribed angle

4. phi

You should memorize that factoid.

5. wio

@phi very interesting fact.

6. wio

So even if the point R moved, then it would always be twice the angle?

7. phi

yes R would always be 1/2 of O, as long as R's arc stays QN

8. phi

Can you figure out what m angle O is ?

9. Brittanyy!

so 46?

10. Brittanyy!

My next question is The figure consists of a tangent and a secant to the circle. A)9.2 B) 7.7 C) 14.3

11. pottersheep

Maybe you should post it up as a different question. It will be more fair to your answers

12. pottersheep