A particle is projected over a triangle from one end of its horizontal base to graze the vertex and fall at the other end of the

Question

A particle is projected over a triangle from one end of its horizontal base to graze the vertex and fall at the other end of the base If B and C are the base angles and a the angle of projection then A sin a sin B sin C B cos a cos B cos C C tan a tan B tan C D cot a cot B cot C

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