Question Detail
Question
Evaluate ∫_(π/4)^(3π/4) cos(π-2x) dx
Correct Answer
Option A is the correct answer.
Detailed Explanation
Antiderivative of cos(π-2x) is -½sin(π-2x). Evaluating from π/4 to 3π/4 gives a net value of 1.
Hint
Integrate cos(π-2x) using the chain rule in reverse, then evaluate at both bounds.