Can someone help me out with this question?
Find the value of w if marc AC = 84°.

Question

Can someone help me out with this question?
Find the value of w if marc AC = 84°.

anonymous · Answer

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tkhunny · Answer

You may wish to consider a factor of 2.

What kind of angle like w would subtend half the circle?

anonymous · Answer

Would I have to multiply by 2?

directrix · Answer

Before I can say, I have to mark up the diagram. That is what I am doing now.

anonymous · Answer

OKay thanks :)

directrix · Answer

The angle with measure w is an inscribed angle of the circle.

tkhunny · Answer

Diameter always cuts off 180º
An angle like w that cuts off 180º is a RIGHT angle.
There's a factor of 2 in there, somewhere.

directrix · Answer

There is a theorem about how to get the measure of an inscribed angle of a circle.

@aayyadi    Do you know that theorem? Or, have you heard of it?

anonymous · Answer

Yeah, but im confused in which type of arc it is?

anonymous · Answer

Wait! you said the inscribed angle..

directrix · Answer

The diagram has a lot of information on it that needs to be ignored for now.

Look at the angle with measure w and look at the arc it cuts off and the measure of that arc. 

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