How can I conceptualize sin, cos, and tan?
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Trigonometric functions specify the relationships between side lengths and interior angles of a right triangle. The sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse. The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse. The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.
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