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#### Question

In two concentric circles, prove that all chords of the outer circle which touch the inner circle are of equal length.

#### Solution

#### Similar questions VIEW ALL

Points A(–1, *y*) and B(5, 7) lie on a circle with centre O(2, –3*y*). Find the values of* y*. Hence find the radius of the circle.

n Fig. 2, PQ and PR are two tangents to a circle with centre O. If ∠QPR = 46°, then ∠QOR equals:

(A) 67°

(B) 134°

(C) 44°

(D) 46°

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