Question

Circles in Geometry

Answer 1

2. 100-30=70/2=35? :)

Answer 2

yes,

http://www.mathwarehouse.com/geometry/circle/tangents-secants-arcs-angles.php
shows the theorems you should use. There are proofs for these theorems, but I don't think you have to learn how to prove them. But you do have to know how to use them

Answer 3

Okay, so if I read through the cite then I can do #1.

This one doesn't make sense, should I just guess?

Answer 4

the thm is external angle = 1/2 * (far - near)

they give the external angle as x
they give the near as x
the "far arc" is 360-x
can you solve for x ?

Answer 5

x=1/2*(360-x)?

Answer 6

x=1/2*(360-x)?

says "external angle (formed by the tangents) = 1/2 of the "far arc"

but the theorem is

external angle = 1/2 * (far arc - near arc)

Answer 7

I need a equation to solve X... :( What equation am I supposed to make?

Answer 8

external angle = 1/2 * (far arc - near arc)

Answer 9

What do I input? I tried and you got confused at it.

Answer 10

step by step. We start with the equation
external angle = 1/2 * (far arc - near arc)

you need to pick out the variable that represents:
1) what is the measure of the external angle ?
2) what is the measure of the near arc ?
3) what is the measure of the far arc?

Answer 11

E=1/2*(F-N)
Now what do I do? How do I compute this?