Cho cot x=$\frac{1}{2}$ tính A= $\frac{sin^3 x -cos^3 x}{sinx+sin^2 xcosx}$
Question
Cho cot x=$\frac{1}{2}$ tính A= $\frac{sin^3 x -cos^3 x}{sinx+sin^2 xcosx}$
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