Estimate the Area under the graph of f x cos x from x to x pi 2 using two approximating rectangle

A) Estimate the area under the graph of f(x) = cos(x) from x = 0 to x = pi/2 using two approximating rectangles?is your estimate an underestimate or overestimate? Find the number of partitions that the simpson’s rule error is less than 0.00001.
 
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