Trig identities

Yes, unfortunately these little lovelies are important so I decided most reluctantly to give them a page all to themselves.

Of course you use trigonometry, commonly called trig, in pre-calculus . And you use trig identities as constants throughout an equation to help you solve proble

This study sheet has ten groups of trig identities for the basic trigonometry functions. Print a copy and keep it with your textbook today.

Trig Identities

Useful trig identities

**Notice:** This post was updated on March 10, 2015 to reflect a correction in the Trigonometric Identities image. The accompanying Google Document was also corrected, as was the link to that Document. If you downloaded the Google Document before 03/10/2015, please re-visit this link and download the new version. Thank you, and sorry for the inconvenience. CLICK HERE to view the YouTube video that corresponds to this post. Identity problems are probably the toughest part of Trigonometry for…

Trig Identities - All List of Trigonometric Identities - Learn Trigonometry | Math formulas, Trigonometry, Math methods

Trig Identities Worksheets

A list of reciprocal identities and quotient identities that make a great first lesson for when you teach trig identities. Come check out all the lessons I use to break down trig identities for my students.

Sketch the diagram when you are struggling with trig identities ... it may help you! Here is how: Start with: tan(x) = sin(x) / cos(x).

Trig Humor …

I want to share a mathematician's toolbox foldable I made for my students to glue in their interactive notebooks this year.

Trig Identities Still Coming In! Remember those fundamental trig identities, rewrite in terms of sine and cosine, & create like…

Proving Trig Identities Worksheet

In a previous post, we talked about trig simplification. Trig identities are very similar to this concept. An identity is the equality of two expressions. When given a trig identity, you have to prove that both sides of the equation are equivalent. This requires using some skills from trig simplification and learning some new skills. One big difference between trig identities and trig simplification is that you are able to work both sides of the equation to show both sides are equivalent…

Free Download of Trig Identities Challenge Activity. In this activity, pre-calculus students work together in small groups to solve a puzzle using trig identities.