To determine which equation is true based on the right triangle, we need more information about the triangle, such as the lengths of its sides or labels for what \( p \), \( t \), and \( s \) represent.
If \( p \), \( t \), and \( s \) represent the lengths of the sides of the triangle, the Pythagorean theorem would usually be applicable, which states that \( a^2 + b^2 = c^2 \) where \( c \) is the hypotenuse.
Without that specific information, we cannot ascertain whether options 1 or 2 are true. Therefore, based on the information given, the best answer is:
3 - There is not enough information about the triangle to write an equation.