Question

then obtain the equation of the circle.
If the line y = 13x + k touches the circle x2 + y2 = 16, then find the value of k.
[NCERTI​

Answer 1

k= -208

Step-by-step explanation:

slope of tangent = x+yy' = 8 ,y= 8-x/y'

compare it with y =13x+k

,k= -104