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Let the tangents drawn from the origin to the circle,

Question:

Let the tangents drawn from the origin to the circle, $x^{2}+y^{2}-8 x-4 y+16=0$ touch it at the points $A$ and $B$. The $(A B)^{2}$ is equal to :

  1. $\frac{52}{5}$

  2. $\frac{32}{5}$

  3. $\frac{56}{5}$

  4. $\frac{64}{5}$


Correct Option: , 4

Solution:

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