Part IV

Equations and Applications

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webextras.eps Find the geometric properties that are most used when studying trigonometry in a free article at www.dummies.com/extras/trigonometry.

In this part…

  • Become acquainted with inverse trig functions.
  • Identify the domains and ranges of the inverse trig functions.
  • Recognize the pairings of the quadrants used by each inverse function.
  • Solve trig equations using identities and inverse functions.
  • Write expressions to include infinitely many answers.
  • Find the areas of triangles using trig functions in the formulas.

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