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Trigonometry Formulas You Must Know for the ACT

By: 
Mark Zegarelli
|
Updated:  
2016-03-26 15:46:57
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From The Book:  
ACT Math Prep For Dummies
ACT Math Prep For Dummies
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Some of the questions on the ACT Math test deal with trigonometry problems. Below are some of the most useful formulas for trig ratios, radians, and identities.

  • Six trig ratios:

    image0.png

  • Formula for radians:

    image1.png

  • Five trig identities:

    image2.png

About This Article

This article is from the book: 

ACT Math Prep For Dummies

About the book author:

Mark Zegarelli is a math tutor and author of several books, including Basic Math & Pre-Algebra For Dummies.

This article can be found in the category: 

ACT