1.

A variable triangle ABC is circumscribed about a fixed circle of unit radius. Side BC always touches the circle at D and has fixed direction. If B and C vary in such a way that (BD)(CD)=2, then locus of vertex A will be a straight line

Answer»

PARALLEL to SIDE BC
perpendicular to side BC
making an ANGLE `(pi//6)` with BC
making an angle `SIN^(-1)(2//3)` with BC

Answer :A


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