Trigonometric functions are mathematical functions that relate angles in a right triangle to ratios of side lengths. Common trigonometric functions include sine, cosine, and tangent.
Imagine you're at a concert and trying to find your friend who's waving their hand in a crowd. You use your phone's compass app (a trigonometric function) to determine their direction based on your angle relative to north.
Unit Circle: A circle with radius 1 centered at the origin used for understanding trigonometric functions.
Periodicity: The property of trigonometric functions where they repeat their values after certain intervals called periods.
Inverse Trigonometric Functions: Functions that "undo" or reverse the effects of trigonometric functions by finding angles given specific ratios of side lengths.
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