Question 285573
If the angle between the sides is almost 0 degrees
the 3rd side is almost {{{9 - 7 = 2}}}
If the angle between the sides is almost 180 degrees,
the 3rd side is almost {{{9 + 7 = 16}}} 
So, if the angle is {{{A}}}, then
{{{2 <= A <= 16}}}