<p>Cabhax is right, you need to put in the effort outside of class to learn the stuff you didn’t learn in high school. Trig is memorization, but don’t overwhelm yourself with all the formulas. Know the few handy ones and the ones you can derive other formulas from.
After the basics, trig derivatives and integrals shouldn’t be a problem.</p>
<p>This might be a helpful resource: [Topics</a> in trigonometry. Table of contents.](<a href=“http://www.themathpage.com/aTrig/trigonometry.htm]Topics”>Trigonometry Homework Help | Free Online Trigonometry Course | Trigonometry for Beginners)</p>
<p>You’re at a tough school doing a tough major, but I’m sure there are others like you. I think it’s fairly common for engineers to work on problem sets together right? Ask someone from class if they want to meet up and do that. Don’t be scared or anxious about going back - be excited and eager to tackle the challenges you’ll face this year. With that mentality, you’ll be more likely to succeed.</p>