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0:55
YouTube
Math and Science
Learn Right Triangles to Master Sine & Cosine
Sine and cosine are fundamental trigonometric functions essential in geometry and calculus. Defined in a right-angled triangle, the sine of an angle is the ratio of the opposite side to the hypotenuse, while cosine is the ratio of the adjacent side to the hypotenuse. In the unit circle, they represent coordinates of points corresponding to ...
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