Toán Lớp 11: Sin ( x +π/4)= -2/3
Sin ( 3x + π/5 ) = -1/2
Sin ( 2x – π/3 ) = √3/2
Sin ( 3x/2 – π/3 ) = 1
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Toán Lớp 11: Sin ( x +π/4)= -2/3
Sin ( 3x + π/5 ) = -1/2
Sin ( 2x – π/3 ) = √3/2
Sin ( 3x/2 – π/3 ) = 1
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