Equation of normal to the circle x² + y² = a² at any point (x1, y1) is

xx1+yy1 = a2

xx1+yy1 = a2

100%

xy1 = x,y

xy1 = x,y

0%

\(\sqrt{x_{1}^2 + y_{1}^2 - a^2} = 0\)

\(\sqrt{x_{1}^2 + y_{1}^2 - a^2} = 0\)

0%

none

none

0%