prove that :- cot x . cot 2x – cot 2x . cot 3 x – cot 3x . cot x = 1​

Question

prove that :- cot x . cot 2x – cot 2x . cot 3 x – cot 3x . cot x = 1​

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Emery 10 months 2021-07-19T03:42:24+00:00 1 Answers 0 views 0

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    2021-07-19T03:43:31+00:00

    Answer:

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