Free K-12 Resources: Mathematics – Trigonometry

Free educational resources can be hard to come by, especially finding them in detailed and easy-to-understand formats. However, the website cK-12 has free textbooks for a variety of subjects and grade levels, all of which are available online, can be downloaded on your Kindle or iPad, or viewed as a PDF.

Under the subject MathematicsTrigonometry, cK-12 covers the following concepts:

  • Right Triangles and Introduction to Trigonometry
  • Inverse Trigonometric Functions
  • Polar System
  • Graphing Trigonometric Functions
  • Trigonometric Identities and Equations
  • Triangles and Vectors

Furthermore, there is a selection of seven FlexBooks that cover Mathematics – Trigonometry, the details of which can be found in the LIST. Again, these textbooks can be viewed online, viewed as a PDF, or downloaded onto your Kindle or iPad. And it’s all free!

View the listView the list

, Monterey K-12 Examiner

Navarre Simpson, a graduate of California University of Monterey Bay, received a B.A. in Human Communication with a concentration in the Single Subject Matter in English. A former instructional student assistant for Computer Science and Technology in a college setting, as well as a note taker for...

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