## Calculus 10th Edition

$\frac{\pi}{2}-1$
Evaluate the Definite integration $\int_{\frac{\pi}{4}}^{\frac{\pi}{2}}( 2-csc^2x)dx$ $[2x+cotx]_{\frac{\pi}{4}}^{\frac{\pi}{2}}$, Integrate $(\pi+0)-(\frac{\pi}{2}+1)$ $\frac{\pi}{2}-1$