5 points) TRUE FALSE Suppose a, b,c, d are some given real numbers. If for each real value of x, the pair (x,2x 1) satisfies both equations ax y

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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.