Assessment #4

What is this video about? 
          This video is about solving trigonometric equations, using half-angle formulas. By using half-angle formulas we can simplify our equation, to render us, to ultimately use the Zero Product Property.


What does the viewer need to pay close attention to in solving this problem?
          The viewer needs to pay close attention to the substitution and why we separate the equation so that the radical is by itself. By separating the radical it makes it easier to eliminate it by squaring both sides, but the viewer needs to be careful to check for extraneous solutions.