Q87. If $\int \operatorname { cosec } ^ { 5 } x d x = \alpha \cot x \operatorname { cosec } x \left( \operatorname { cossc } ^ { 2 } x + \frac { 3 } { 2 } \right) + \beta \log _ { \epsilon } \left| \tan \frac { x } { 2 } \right| + C$ where $\alpha , \beta \in \mathbb { R }$ and C is the constant of integration, then the value of $8 ( \alpha + \beta )$ equals $\_\_\_\_$\\