Question 600725
*[tex \LARGE \cos \hspace{5 mm} 2x] or *[tex \LARGE \cos^2 {x}]?


Make sure you remove all ambiguities from your question. In either case, apply an identity:


*[tex \LARGE \cos \hspace{5 mm} 2x = 1 - 2 \sin^2{x}] or


*[tex \LARGE \cos^2 {x} = 1 - \sin^2{x}]