CBSE Class 10 Answered
circles
Asked by | 12 Oct, 2008, 01:12: PM
Expert Answer
Let O be the centre of the circles . Let P be the point of tangency , i.e the point at which
the chord of the larger circle which touches the smaller circle. Let K and K'be the points at which the chord touches the outer circle. |
*Answer Description: |
Now OPK is a right triangle
PK2 = 32 + 52 = 9 + 25 = 34
Triangles OPK and OPK'are congruent (RHS)
Pk = PK'
So KK'= 2 x 34 = 68
Answered by | 12 Oct, 2008, 10:43: PM
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