Find an equation in the form y=ax? +bx+c for the parabola passing through the points. (-5.-201). (4. - 201). (-2-21)

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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.