Evaluate the following integrals as a limit of sums:
Formula used:
where,
Let,
Here, f(x) = cos x and a = 0
Now, by putting x = 0 in f(x) we get,
f(0) = cos 0
f(h)
= cos h
Similarly, f(2h)
= cos 2h
We know,
Here A = 0 and B = h
Therefore,