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## Homework Statement

A right circular cone is drawn above, with 2 circles centered at A on its base as shown. AB is the height of the cone, the measure of <ABC is 60° and BC has a lenght of y. If BD bisects <ABC, which one of the following gives the area of the smaller circle in terms of y?

http://imgur.com/JgrevjM

## Homework Equations

none

## The Attempt at a Solution

Included in the picture

Could you explain what I did wrong, and how to get the correct answer? Thanks