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The equation(s) of the tangent(s) to the circle x^2 + y^2 = 4 which are parallel to x + 2y + 3 = 0 are 

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The equation(s) of the tangent(s) to the circle x2 + y2 = 4 which are parallel to x + 2y + 3 = 0 are 

(A) x – 2y = 2 

(B) x + 2y = ±2√3 

(C) x + 2y = ±2√5 

(D) x – 2y = ±2√5

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Correct option is : (C) x + 2y = ±2√5

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