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

Prove that: tan3A tan2A tan A=tan3A-tan2A-tan Acot A cot2A-cot2A cot3A-cot3A cot A=1

Prove that tan3A-tan2A-tanA=tan3Atan2AtanA

Prove that: cotAcot2A-cot2Acot3A-cot3AcotA=1

Prove that: cotAcot2A-cot2Acot3A-cot3AcotA=1

Prove that: cot2Acot3A-cot3Acot5A-cot5Acot2A=1

Prove that: cot2Acot3A-cot3Acot5A-cot5Acot2A=1

Prove that t a n A+2t a n2A+4t a n4A+8cot8A=cot Adot

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 tan A - cot A =-2 cot2A

1/(tan3A-tan A)-1/(cot 3A-cot A)=