Question

What is the area of the shaded region between the first loop of the curve y=sin(x/2) in the first quadrant and the x-axis?

Answer 1

PLEASE HELP :'(

Answer 2

here u have to integrate sin(x/2) dx with limits from 0 to (2pi)

Answer 3

oh, thank you SO MUCH! :)

Answer 4

oh one more thing. what is cos(pi)?

Answer 5

and, could you also work it out?