Question

47. ♡ - The circles x2 + y2 = 9 and x2 + y2_12y + 27 = 0 touch each other then the equatiðn of the common tangent 15. a) x - 3y + 1 = 0 b) y = 3 c) x+y=2 d) X=4

11th - 12th Class

Maths

Solution

168

4.0 (1 ratings)

( x^{2}+y^{2}=9 ) (1) ( x^{2}+y^{2}-12 y+27=0 quad ) is put is in lij ( Rightarrow 9-12 y+27=0 ) ( y=3 ) ( p+t y=3 ) in (1) ( x^{2}+9=9 ) ( x=0 ) point of contact ( =[0,3] ) tangent equation ( x x+y y_{1}=9 ) ( 0+3 y=9 ) ( y=3 )