Final answer:
To evaluate the integral of cos(x) - 1, find the antiderivative of cos(x) - 1 and replace x with the upper and lower limits of integration to get the result.
Step-by-step explanation:
To evaluate the integral of cos(x) - 1, we need to find the antiderivative of cos(x) - 1 with respect to x. The antiderivative of cos(x) is sin(x), and the antiderivative of 1 is x. So the antiderivative of cos(x) - 1 is sin(x) - x. To evaluate the integral, we can simply replace x with the upper limit of integration and subtract the result of substituting x with the lower limit of integration.