Question: 1. Find the exact area between f(θ) = sin θ and g(θ) = cos θ for 0 ≤ θ ≤ 2π.
2. Find the exact value of the area between the graphs of y = cos x and y = ex for 0 ≤ x ≤ 1.
3. Find the exact positive value of c if the area between the graph of y = x2 - c2 and the x-axis is 36.