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Prove that cot x. cot 2x - cot 2x. cot3x - cot x. cot3x = 1. |
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Answer» cot x. cot 2x - cot 2x. cot3x - cot x. cot3x = 1 Trigonometry is abranch of mathematics that deals with the relation between the angles and sides of a triangle. |
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