How can you calculate the area of this set?
(x,y) ∈ R²
0 <= x <= pi number
0 <= y <= 1/2
0 <= y <= sinx
Do you formulate an equation and calculate the integral? How do you do it?
You draw a picture, and then when you have identified the required area you decompose it into elements that you either know the area of or can find the area by using an elementary integral