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Mathematics LibreTexts

10: Right Triangle Trigonometry

  • Page ID
    30921
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    • 10.1: Right Triangle Trigonometry
      We have previously defined the sine and cosine of an angle in terms of the coordinates of a point on the unit circle intersected by the terminal side of the angle. In this section, we will see another way to define trigonometric functions using properties of right triangles.


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