## Billy’s Pizza
*May 31, 2011*

*Posted by Saketh in : bonus , trackback*

Billy obtained a triangular slice of pizza $ABC$ to go with his soda. If $m\angle A = m\angle B = 72 ^\circ$ and $AB = 1$, compute the exact value of $BC$.

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## Billy’s Pizza
*May 31, 2011*

*Posted by Saketh in : bonus , trackback
*

Billy obtained a triangular slice of pizza $ABC$ to go with his soda. If $m\angle A = m\angle B = 72 ^\circ$ and $AB = 1$, compute the exact value of $BC$.

## Comments»

approximately -0.666 is what I got.

It’s a length, it should be positive. However, $\frac{2}{3}$ is incorrect.