The graph of the function \( \cos x \cos (x+2)-\cos ^{2}(x+1) \) is (a) a straight line passing ...
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0The graph of the function \( \cos x \cos (x+2)-\cos ^{2}(x+1) \) is
(a) a straight line passing through \( \left(0,-\sin ^{2} \theta\right) \) with slope 2
(b) a straight line passing through \( (0,0) \)
(c) a parabola with vertex \( \left(1,-\sin ^{2} 1\right) \)
(d) a straight line passing through the point \( \left(\frac{\pi}{2},-\sin ^{2} 1\right) \) and parallel to the \( X \)-axis
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