Class 11Mathematics10-1.Circle and System of CirclesGeometrical problems regarding circle and its properties
EasyFor the circle $x^2+y^2-9=0$,find the equation of the chord having $(1,2)$ as its mid-point.
- A$x+2y+5=0$
- B$x-3y-5=0$
- C$x-3y+5=0$
- D$x+2y-5=0$
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