Find the equation of the tangent to the circle `x^2+y^2=15` which is perpendicular to the line 4x-y+6=0

Find the equation of the tangents to the cirlce x^(2)+y^(2)=81 which are perpendicular to the line 4x+3y=0

Answer the following:Find the equations of the tangents to the circle x^2+y^2=36 which are perpendicular to the line 5x+y=2

Find the equation of the tangents to the circle x^2+y^2=9 , perpendicular to the line x - y - 1 = 0.

Find the equation of the tangent to the hyperbola x^(2)-4y^(2)=36 which is perpendicular to the line x-y+4=0 .

Find the equation of the tangent to the ellipse : x^2+4y^2=20 which are perpendicular to the line 4x+3y=7 .