Question

Which expression is equivalent to (1 – sin2 x)(sec x)?

Answer 1

\[\sin^{2}\theta+\cos^{2}\theta=1\]
\[1-\sin^{2}\theta=\cos^{2}\theta\]
\[\sec \theta=\frac{ 1 }{ \cos \theta }\]
\[(\cos^{2}\theta)(\frac{ 1 }{ \cos \theta })=\cos \theta\]

Answer 2

thanks