If p be the length of the perpendicular from the origin on the line x/a + y/b = 1, then
It is given that p is the length of the perpendicular from the origin on the line 
Squaring both sides
18
If p be the length of the perpendicular from the origin on the line x/a + y/b = 1, then
It is given that p is the length of the perpendicular from the origin on the line
Squaring both sides