Equation of tangent to the circle x2+y2=a2 which is parallel to the line y=mx+c, is

Question

Equation of tangent to the circle x2+y2=a2 which is parallel to the line y=mx+c, is (A)  my=x± a√1+m2  (B)  y=mx± √1+m2  (C)  y=mx± a√1+m2  (D) None of these

Tardigrade Admin · Accepted Answer

Equation of tangent to the circle x2+y2=a2, which is parallel to y=mx+c is y=mx± a√1+m2

Q. Equation of tangent to the circle $x^{2} + y^{2} = a^{2}$ which is parallel to the line $y = m x + c,$ is

$m y = x \pm a 1 + m^{2}$

$y = m x \pm 1 + m^{2}$

$y = m x \pm a 1 + m^{2}$

None of these

Equation of tangent to the circle $x^{2} + y^{2} = a^{2},$
which is parallel to $y = m x + c$ is $y = m x \pm a 1 + m^{2}$

Q. Equation of tangent to the circle x2+y2=a2 which is parallel to the line y=mx+c, is

my=x±a1+m2​

y=mx±1+m2​

y=mx±a1+m2​