Solve the following Integrals ∫cos3⁡θ1−sin⁡θdθ

∫1−sin2⁡θ1−sin⁡θcos⁡θdθ  put sin⁡θ=t;cos⁡dθ=dt∫1−t21−tdt=∫(1+t)dt=t+t22+c=sin⁡θ+sin2⁡θ2+c