# Diagonals of a Heptagon

**Geometry**Level pending

Let the length of the longest diagonal of a regular unit heptagon be \(a\) and the length of the shortest diagonal be \(b\). Find the value of \(100(a-b)\) rounded to the nearest integer.

You may use a calculator that can perform standard trig functions (\(\sin\), \(\cos\), and \(\tan\)).