The equation of the chord of the circle ${x^2} + {y^2} = {a^2}$ having $({x_1},{y_1})$ as its mid-point is
The equation of the chord of the circle ${x^2} + {y^2} = {a^2}$ having $({x_1},{y_1})$ as its mid-point is
- [IIT 1983]
- A
$x{y_1} + y{x_1} = {a^2}$
- B
${x_1} + {y_1} = a$
- C
$x{x_1} + y{y_1} = x_1^2 + y_1^2$
- D
$x{x_1} + y{y_1} = {a^2}$
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- [IIT 1981]
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- [JEE MAIN 2021]