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cot A cot2A-cot2A cot3A-cot3A cot A=1...

cot A cot2A-cot2A cot3A-cot3A cot A=1

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Prove that cot x cot2x-cot2x cot3x-cot3x cot x=1

Prove that: cot xcot 2x-cot2x cot3x-cot3x cot x=1

cot x cot 2x-cot 2x cot3x-cot3x cotx=1

Prove that: cot2Acot3A-cot3Acot5A-cot5Acot2A=1

Prove that: cot2Acot3A-cot3Acot5A-cot5Acot2A=1

cot x*cot2x-cot2x*cot3x-cot3x*cot x=1

Prove that cotx cot2x -cot2xcot3x-cot3xcotx=1

Prove that cotx cot2x - cot2x cot3x - cot3x cotx = 1

Prove the following: cot x cot 2x -cot 2x cot 3x -cot 3x cot x = 1

Prove that : cot x cot2x+cot2x cot3x+2=cot x(cot x-cot3x)