$\frac{1}{5}\left(ab+2cd\right)\sin3\theta$

$\frac{1}{3}\left(2ab+cd\right)\sin\theta$

$\frac{1}{2}\left(ab+cd\right)\sin2\theta$

$\frac{1}{2}\left(ab+cd\right)\sin\theta$

$\frac{1}{4}\left(ab+cd\right)\sin\theta$