The graph of sine has point symmetryabout the point (Π/2,0). In fact, since this graph is periodic and repeats, you can find a point of symmetry for all integers K: (Π/2+2Πk,0)

Below is a picture of the Graph of Cosine.

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The graph of sine has point symmetryabout the point (Π/2,0). In fact, since this graph is periodic and repeats, you can find a point of symmetry for all integers K: (Π/2+2Πk,0)

Below is a picture of the Graph of Cosine.