The length of a tangent from a point d cm away from the centre of a circle of radius ‘r’ is √d^2 - r^2
The length of a tangent from a point d cm away from the centre of a circle of radius ‘r’ is
(A) \(\sqrt{d^2-r^2}\)
(B) \(\sqrt{d^2+r^2}\)
(C) \(\sqrt{dr}\)
(D) \(\sqrt{d+r}\)
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