when the two circles intersect eachother then tangents at the point of intersection pass throgh the center. this is true or false.. pls explain in detail..

and if not then formula of angle of intersection of two circles which we study in coordinate geometry

cos@ = r2+s2-d2/2rs

r2 means square of r. where r and s radii of two circles and d is distance b/w centers. how this is generated ...

Dear Atul,

The statement above is FALSE.

Angle of intersection of two circles is defined as the angle between the tangents at this point of intersection. Here angle ∠O₁PO₂ = π – θ

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