Integrate $$\int (1+\alpha^{2})^{-3/2} \sin \theta d \theta $$where $\alpha = \cos \theta + a \sin \theta $ with a constant $a$.
How could I possibly do that? Trigonometrical manipulations? Or integration parts?
Integrate $$\int (1+\alpha^{2})^{-3/2} \sin \theta d \theta $$where $\alpha = \cos \theta + a \sin \theta $ with a constant $a$.
How could I possibly do that? Trigonometrical manipulations? Or integration parts?