Student Video #6: Unit S Concept 7 - Solving equations with half-angle formulas

• What is this video about?

This video is about Unit S Concept 7, which is solving equations with half-angle formulas. To solve this problem, we need to know the half-angle formulas and some old knowledge, in this case, the Pythagorean identities. The equations can get tricky sometimes; however, we have to get used to it to know which formulas or identities we need to solve it.

• What does the viewer need to pay special attention to in order to understand the concept?

The readers need to pay attention to the equation. They must know what is given and what they do by using that information. This type of problem is hard because the readers might not know what to do next or which formulas they need to use. Actually, there are many ways to solve this problem.