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Q.
If OA and OB be the tangents to the circle x
2
+y
2
-6x-8y+21=0 drawn from the origin O, then AB =
A.
11
B.
4/5√21
C.
√17/3
D.
√3/17
E.
None of the above
View Answer
Correct choice: B
Explanation:
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