Will taking math online help me pass trig?

There’s the free MIT Open Source (or whatever it’s called) and the Great Courses series that just recently had a huge discount. I’m thinking the pre-Calc, Calc 1 and 2 series for about $190. I’ve heard only great things about the Great Courses Calc series and plan to get it next year for my daughter when it goes on sale again. There is also the free Kahn Academy.

Without a doubt augment with support material.

Here’s the trig/pre-Calc for $88:
http://www.thegreatcourses.com/courses/mathematics-describing-the-real-world-precalculus-and-trigonometry.html