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Grade: 12th pass
        
In general two tangents can be drawn from an external point (x1 y1) to the hyperbola and they are
y – y1 = m1 (x - x1) & y -y1 = m2 (x - x1 ), prove that  m1 & m2 are roots of the equation
( x1^2-a^2 ) m^2  – (  2*x1*y1 ) m+y1^2+b^2=0
3 months ago

Answers : (1)

Arun
23787 Points
							
Dear student
 
Just write Equation of chord of contact T = 0
as these contact points lines passes through (x1, y1) hence you get equation in 2 dgree.
3 months ago
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