\(\)Q. Evaluate the value of \(\phi'(\frac{3\pi}{4})\). If \(\phi = \int_{2\pi-\theta}^\pi(\sin\frac{t}{2})^{({\frac{1}{60}}\sum_{\gamma=1}^{15} \gamma)}dt\) .
(Hint : \(\scriptsize{\cos^2\tiny\theta =\frac{1+cos(2\theta)}{2}},
\scriptsize{\sin^2\tiny\theta =\frac{1-cos(2\theta)}{2}} \) )
Also, calculate \([\phi]\), where [m] is less than or equal to an integral values.
