Use the graph of y=-2(x-3)^2+2 to find the vertex. Decide whether the vertex is a maximum or a minimum point.

B. Vertex is a maximum point at (3, 2)

The vertex is the point at the peak of the graph: (3, 2)Since the graph opens downward, it's the maximum point

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.