Question

what is equivalent to 1 – cos^2 x?

Answer 1

\(\Large\color{black}{ \bf sin^2x~~+~~ cos^2 x~~=~~1 }\)
\(\Large\color{red}{ \bf ~~~~~~~~~~~~-cos^2 x~~~~~~~~-cos^2 x }\)

\(\Large\color{black}{ \bf sin^2x~~=~~~1~~-~~ cos^2 x }\)

Answer 2

It is equivalent to sin^2x