" 8.Find "k" if the circles "x^(2)+y^(2)-16y-k=0" and "x^(2)+y^(2)+4x-8=0" are orthogonal "

Find k if the cirlces x^(2)+y^(2)-5x-14y-34=0 and x^(2)+y^(2)+2x+4y+k=0 are orthogonal to each other.

Find the value of k, if the circles x^(2) + y^(2) + 4x + 8 = 0 and x^(2) + y^(2) - 16y + k = 0 are orthogonal.

The value of K .If the circles x^(2)+y^(2)+2by-k=0,x^(2)+y^(2)+2ax+8=0 are orthogonal

If the two circles 2x^(2) +2y^(2) -3x+6y+k=0 and x^(2) +y^(2) -4x +10y +16=0 cut orthogonally, then the vlaue of k is-

Find k if the circles x^2+y^2-5x-14y-34=0 and x^2+y^2+2x+4y+k=0 are orthogonal to each other.

Find the locus of the centres of the circle which cut the circles x^(2)+y^(2)+4x-6y+9=0 and x^(2)+y^(2)+4x+6y+4=0 orthogonally

For what value of k is the circle x^(2)+y^(2)+5x+3y+7=0 and x^(2)+y^(2)-8x+6y+k=0 cut each other orthogonally.

If the two circles 2x^(2)+2y^(2)-3x+6y+k=0 and x^(2)+y^(2)-4x+10y+16=0 cut orthogonally,then find the value of k .