## -Welp- one year ago What is there measure of AB when m>P= 84? http://i.imgur.com/n903urj.png

1. -Welp-

help

2. DanJS

If you have two tangents to a circle intersect at an angle... the formula here is $P = \frac{ 1 }{ 2 }(ALB - AB)$

3. DanJS

They gave you P=84 You can substitute ALB = 360 - AB

4. DanJS

84 = (1/2)*(360 - 2*AB) there you can figure AB

5. -Welp-

I still don't understand. How am I supposed to figure out AB with that formula

6. DanJS

84 = 180 - AB AB = 96

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