O cot(-x) = - cot(2) = cos(-2) = cos(2) x sin(-x) = – sin(x) = Otan(-x) = – tan(3)
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O cot(-x) = - cot(2) = cos(-2) = cos(2) x sin(-x) = – sin(x) = Otan(-x) = – tan(3)
O cot(-x) = - cot(2) = cos(-2) = cos(2) x sin(-x) = – sin(x) = Otan(-x) = – tan(3)
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