\(\sec \theta\)
\(\mathrm{cosec} \theta\)
\(\cot \theta\)
\(\sec^2 \theta\)
\(\mathrm{cosec}^2 \theta\)
\(\sin 2A\)
\(\cos 2A\) = \(2 \cos^2 A-1\)
\(\tan 2A\)
