Question

The locus of a point such that the tangents drawn from it to the circle x² +y² –6x–8y = 0 are perpendicular to each other is

a. x² +y² –6x–8y–25 = 0

b. x² +y² +6x–8y–5 = 0

c. x² +y² –6x+8y–5 = 0

d. x² +y² –6x–8y+25 = 0

Answer 1

Correct option is  a. x² +y² –6x–8y–25 = 0