Mathematics, 24.12.2020 04:10 treway3982

Cot(A+pi/4) - tan(A-pi/4) = 2cos2A/1+sin2A $cot(a + \pi \div 4) - tan(a - \pi \div 4) = 2cos2a \div 1 + sin2a$

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Cot(A+pi/4) - tan(A-pi/4) = 2cos2A/1+sin2A...

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