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In the circle below, AB || CD, AD is a diameter of the circle, and AD = 36".What is the length of AB in inches? Express your answer in terms of pi. I got 18 * sin(80)/sin(50) but I do not know how to express it using pi.

 Mar 4, 2023
edited by iambog  Mar 4, 2023
 #1
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Your answer 18 * sin(80)/sin(50)  works out to 20 + pi.

 Mar 4, 2023
 #2
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Sorry, but it does not. I was able to convert it to 36 * sin(2pi/9).

Guest Mar 5, 2023
edited by Guest  Mar 5, 2023

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