To answer this question, I would need the definitions of the variables \( p \), \( t \), and \( s \) that you're referring to in the context of the right triangle. Typically, in a right triangle:
- \( s \) would represent the length of one leg,
- \( p \) would represent the length of the other leg, and
- \( t \) would represent the length of the hypotenuse.
In that case, the correct equation would be \( p^2 + s^2 = t^2 \), which is known as the Pythagorean theorem.
So based on the typical assignments of these variables, the answer would be "2". If the variables represent something different, please provide that information for a more accurate response.