# Petar's equations

**Algebra**Level 5

Consider the system of equations:

\[ \begin{align} xa + y\sin \left(\pi \sqrt{a^2+b^2}\right) & = 0 \\ xb + y\sin \left(\pi \sqrt{a^2+b^2}\right) &= 0 . \end{align}\]

How many different ordered pairs of integers \((a, b)\) subject to \(\left| a \right| < 6, \left| b \right| < 6\) are there such that the equations have a non-trivial solution \((x,y) \)?

This problem is posed by Petar V.

**Details and assumptions**

A **non-trivial solution** is a pair of values \( (x,y) \neq (0,0) \) which satisfies both equations.

**Your answer seems reasonable.**Find out if you're right!

**That seems reasonable.**Find out if you're right!

Already have an account? Log in here.