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If A, B, C, D be the angles of a quadril...

If `A, B, C, D` be the angles of a quadrilateral, prove that : `(tanA+tanB+tanC+tanD)/(cotA+cotB+cotC+cotD) = tan A tan B tan C tan D`

A

tan A tan B tan C tan D

B

cot A cot B cot C cot D

C

`tan^(2)A + tan^(2)B + tan^(2)C + tan^(2)D`

D

`sum tan A tan B tanC`

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The correct Answer is:
A
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