Prove that:
`tan7A-tan5A-tan2A=tan7Atan5Atan2A`

Prove that tan3A-tan2A-tanA=tan3Atan2AtanA

Prove that : tan 7A -tan 5A-tan 2 A = tan 7A tan 5A tan 2A .

Prove that: tan3Atan2AtanA=t a n3A-tan2A-t a n A cot Acot2A-cot2Acot3A-cot3Acot A=1

In DeltaABC , prove that: tan2A + tan2B+tan2C=tan2Atan2Btan2C

In DeltaABC , prove that: tan2A + tan2B+tan2C=tan2Atan2Btan2C

Prove that : (i) "tan"3A-"tan"2A-"tan"A="tan"3A "tan"2A "tan"A (ii) "tan"7A-"tan"5A-"tan"2A="tan"7A "tan"5A "tan"2A (iii) "tan"13 A -"tan" 9A-"tan" 4A ="tan"13 A "tan"9A tan 4A.

tan3A-tan2A-tan A= is equal to tan3A-tan2A-tan A tan3.Atan2A tan Atan A tan2A-tan2Atan3A-tan3Atan A None of these

tan3 Atan 2 Atan A=?

In triangleABC,A+B+C=pi ,show that tan2A+tan2B+tan2C=tan2Atan2Btan2C

Prove that tan 11 A tan 7A tan 4A = tan 11 A - tan 7A - tan 44.