Part IV

Equations and Applications


webextras.eps Find the geometric properties that are most used when studying trigonometry in a free article at

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.

Get Trigonometry For Dummies, 2nd Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.