How can we derive that if from an ext point a pair of tangents are drawn to a conics figure then eqn will be SS1=T^2
where (x1,y1) is the ext point.
Plz help.
How can we derive that if from an ext point a pair of tangents are drawn to a conics figure then eqn will be SS1=T^2
where (x1,y1) is the ext point.
Plz help.