\(\displaystyle r^2=\dfrac{10}{\sin(\theta)\cos(\theta)}\)
\(\displaystyle x^2 + \left(y-\frac{5}{2}\right)^2 = \frac{25}{4} \)
\(\displaystyle \dfrac{7\pi^2}{16}\)
\(\displaystyle \dfrac{e^{3\pi/2}-e^{\pi/6}}{2}\)
\(\displaystyle \frac{\pi}{48} \)
\(\displaystyle \frac{9\pi}{4}\)
\(\displaystyle \frac{72-9\pi}{4}\)