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For what and only what values of `alpha` lying between `0 and pi/2` is the inequality is `sin alphacos^(3)alpha ltsin^(3) alpha cos alpha` valid?A. `alpha in(0,pi//4)`B. `alpha in(0,pi//2)`C. `alpha in(pi//4,pi//2)`D. none of these

Answer» Correct Answer - A


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