Compute R 100 from Example 5, approximating the area under the graph of (x) = sin x between /4 and 3/4. EXAMPLE 5 Let A

Compute R₁₀₀ from Example 5, approximating the area under the graph of ƒ(x) = sin x between π/4 and 3π/4.

EXAMPLE 5 Let A be the area under the graph of f(x) = sinx on the interval [4,3] (Figure 13). Set up (but do not compute) the expression A = lim Ry for determining the area. N