`tan7Atan4Atan3A=tan7A-tan4A-tan3A`.

Prove that: tan7A-tan5A-tan2A=tan7Atan5Atan2A

Prove that: tan7A-tan5A-tan2A=tan7Atan5Atan2A

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

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

Prove that tan3A-tan2A-tanA=tan3Atan2AtanA

Find the absolute value of (tanAtan2A)+(tan2A tan4A)+(tan4A tanA) where A=(2pi)/7 .

tan3 Atan 2 Atan A=?

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.

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