The angle between the tangents drawn from an external point (x₁, y₁) to the circle x² + y² = a² is given by tan θ equal...

Type: MCQ • Marks: 1

The angle between the tangents drawn from an external point (x₁, y₁) to the circle x² + y² = a² is given by tan θ equal to:

A. (2r √(S₁)) / (S₁ - r²)

B. r / √S₁

C. √S₁ / r

D. 2r / S₁

Explanation

Standard angle formula between tangents from external point to circle.

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