If the line `3x - 4y - k = 0 (k gt 0)` touches the circle `x^(2)+y^(2)-4x-8y-5 =0` at (a, b) then
Channel: Doubtnut
Date: 24/05/2020

If the line `3x - 4y - k = 0 (k gt 0)` touches the circle `x^(2)+y^(2)-4x-8y-5 =0` at (a, b) then `k + a + b` is equal to :-