Write the iterated integral of a function f
A. the triangle with vertices at point (1,1,) , (1,2), (3,0). First find the equations of the three lines representing the sides of the triangle.
b. The region between the line y = (4/pi)x and the graph of y = tan (x) in the first quadrant. First find the point of intersection of the line with the tangent.
c. The region inside the r = 2(1-cos theta) in the upper half plane that lies above the line y = -x. First find the point of intersection of the line with the cardiod. Use polar coordinates to set up the integral.