Understanding the Cosine Function: Why the Value of cos 0° is 1

cos 0°

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The value of cos 0° is 1. This is because the cosine function is the ratio between the adjacent side and the hypotenuse of a right triangle, and when the angle is 0°, the adjacent side is the same as the hypotenuse, resulting in a ratio of 1. Therefore, cos 0° is equal to 1.

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