# Science talk:Math Exam Resources/Courses/MATH101/April 2013/Question 07 (a)

## Contents

Second Double Angle Formula007:47, 26 January 2014

## Second Double Angle Formula

Its probably worthwhile breaking this up into two align chunks and better explain what's going on.

Also, students have a ton of difficulty with applying the double angle formula with ${\displaystyle \cos ^{2}(2x)}$ and so this might be worth an explanation.

07:47, 26 January 2014