A regular 12-gon with center O is inscribed in a unit circle. Let A, B, C be three consecutive vertices of the 12-gon as shown below. Let M be the intersection of AC and BO. Find AM.

https://latex.artofproblemsolving.com/6/1/4/614ebc8a82efdae874074045ee068bceec61b95a.png

noobieatmath Jan 20, 2019