(a) Estimate the area under the graph of f(x) = 4 cos(x) from x= 0 to x = π/2 using four approximating rectangles and rightendpoints. (Round your answers to four decimal places.) R4 = Sketchthe graph and the rectangles. WebAssign Plot WebAssign PlotWebAssign Plot WebAssign Plot Is your estimate an underestimate oran overestimate? underestimate overestimate (b) Repeat part (a)using left endpoints. L4 = Sketch the graph and the rectangles.WebAssign Plot WebAssign Plot WebAssign Plot WebAssign Plot Is yourestimate an underestimate or an overestimate? underestimateoverestimate
