"Tangent to the circle `x^2+y^2=a^2` at any point on it in   the first quadrant makes intercepts
Channel: Doubtnut
Date: 28/06/2020

"Tangent to the circle `x^2+y^2=a^2`
 at any point on it in
 
  the first quadrant makes intercepts `O A`
 and `O B`
 on `x`
 and `y`
 axes respectively, `O`
 being the centre of the
 
  circle. Find the minimum value of `O A+O B`
 ."