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Mathematics, 02.06.2021 16:40 719729
If 3cot A= 4 check whether 1-tan'2A/1+tan'2A =cos'2 A - sin'2 A or not
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If 3cot A= 4 check whether 1-tan'2A/1+tan'2A =cos'2 A - sin'2 A or not...
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