Question

the equation of pair of tangents drawn from the point (1, 2) to the ellipsex^2/9 +y^2/4=​

Answer 1

ANSWER : (x ^ 2)/9 + (y ^ 2)/4 = 1circle =1 circle=x^ 2 +y^ 2 =1 Rightarrow c contact with respect to * (3, 0) cord of 3x = 1x = 1/3 y= 1 2 b= 1 2 ,a= 1 3 c= x^ 2 a^ 2 + y^ 2 b^ 2 =1 or plotting similarly for * (0, 2) the graph you will get, the maximum distance L = 3 - 1/3 = 11/3 l = 2 - 1/2 = 3/2 x^ 2 1 9 + y^ 2 1 4 =1 e= sqrt 1-( 1 9 / 1 4 ) = sqrt 1- 4 9 sqrt 5 3 s0,Ans=A ond C the minimum distance so, equation is,