\(\int_0^{\pi/4}\sin^3 \theta d\theta=?\)

1
\(\frac{2}{3}+\frac{5}{6\sqrt2}\)
2
\(\frac{2}{3}-\frac{5}{6\sqrt2}\)
3
\(-\frac{2}{3}+\frac{5}{6\sqrt2}\)
4
\(-\frac{2}{3}-\frac{5}{6\sqrt2}\)

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