Mathematics, 27.08.2021 17:00 ridzrana02

Câu1: Cho cos2x=3/5 với 3pi/4. Tính sinx, cosx, tan(x-pi/4). Câu2: Tìm giá trị lớn nhất, nhỏ nhất của biểu thức P= -2sin(x+pi/3)+2

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Câu1: Cho cos2x=3/5 với 3pi/4. Tính sinx, cosx, tan(x-pi/4). Câu2: Tìm giá trị lớn nhất, nhỏ nhất...

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