Question

verify that this is an identity.
tan^2 theta +1/sec theta = sec theta

Answer 1

\(\large\tt \begin{align} \color{black}{\dfrac{tan^2\theta +1}{sec\theta}\\~\\
= \dfrac{sec^2\theta}{sec\theta}\\~\\
= sec\theta}\end{align}\)

Answer 2

remember
\(\large\tt \begin{align} \color{blue}{tan^2\theta+1=sec^2\theta}\end{align}\)

Answer 3

thank you