1.\int \frac{dx}{7 + 5\cos x} =a.\frac{1}{\sqrt3}\tan^{-1}(\frac{1}{\sqrt3}\tan(x/2)) + cb.\frac{1}{\sqrt6}\tan^{-1}(\frac{1}{\sqrt6}\tan(x/2)) + cc.\frac17\tan^{-1}(\tan(x/2)) + cd.\frac14\tan^{-1}(\tan(x/2)) + cLogin to continueOnly logged in users canattempt or see the solution.
