Transcribed image text: Establish the identity sin [pi/2 - theta] = cos theta. Which of the following four statements establishes the identity? A. sin [pi/2 - theta] = sin pi/2 cos theta + cos pi/2 sin theta = (1) cos theta + (0) sin theta = cos theta B. sin [pi/2 - theta] = sin pi/2 sin theta - cos pi/2 cos theta = (0) sin theta - (1) cos theta = cos theta C. sin [pi/2 - theta] = sin pi/2 cos theta - cos pi/2 sin theta = (1) cos theta - (0) sin theta = cos theta D. sin [pi/2 - theta] = sin pi/2 sin theta + cos pi/2 cos theta = (1) cos theta + (0) sin theta = cos theta
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