Answer
$\dfrac{5}{3}$
Work Step by Step
$\cos{2t} =\dfrac{3}{5}$
$\sec{2t} = \dfrac{1}{\cos{2t}} = \dfrac{5}{3}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.