Please help on Contour Integration:
Question 1: Determine the integral of the function phi(z)=tan(z) around a contour that is a rectangle extending from 0 to 2pi in the real direction and from -0.5i to +0.5i in the imaginary direction.
Question 2: Determine the integral of the function phi(z)=sin(z) / ((z-pi)(z+pi)) around the contour that is a circle with radius 2"