tanA-cotA=-2cot2A...

`tanA-cotA=-2cot2A`

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Prove that: cot2A + tanA= cotA - cot 2A

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Prove the following : 1/(tan3A-tanA)-1/(cot3A-cotA) = cot2A

Prove the following: (frac(1)(tan3A-tanA))-(frac(1)(cot3A-cotA))=cot2A

Prove the following: tanA+2tan2A+4tan4A+8cot8A=cotA

The expression tanA(1-cotA)+cotA/(1-tanA) can be written as

If A is not an intergral multiple of pi//2 , prove that tanA+cotA=2"cosec"2A

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Prove that cotA-cosec2A=cot2A

Prove that: cotA-cot2A="cosec"2A

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