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Trigonometry For Dummies, 2nd Edition by Mary Jane Sterling

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Part I

Getting Started with Trigonometry

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In this part…

  • Become acquainted with angle measures and how they relate to trig functions.
  • Discover formulas that provide lengths of segments, midpoints, and slopes of lines.
  • Become familiar with circles and the relationships between radii, diameters, centers, and arcs.
  • Relate infinitely many angle measures to just one reference angle.
  • Find a simple conversion method for changing from degrees to radians and vice versa.
  • Observe the properties of special right triangles, and use the Pythagorean theorem to formulate the relationships between the sides of these right triangles.

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