1

If you have trouble remembering trig identities, this article is for you! This neat trick will teach you all you need to know about how to recognize the fundamental trig identities without ever having to memorize them!

1

Bright storm is a website that offers help on math and science.

0

Augmented matrices are a topic of Linear Algebra that is commonly taught in Precalculus classes for some reason. It formalizes the concept of a linear system, and while that sounds wonderful to a mathematician it can actually be a royal pain when it comes right down to running numbers around.

Even as student in college level math courses, Gaussian elimination (the method used to solve these matrices) is a task that causes frequent errors, so I decided to take a very slow, steady approach to the topic to better inform confused juniors and seniors across America [that sounded less cheesy in my head].

0

This will teach you everything you need to know. Part 2.

0

This will teach you everything you need to know. Part 1.