Assessment #4: Unit S Concept 7

Unit S Concept 7 #4

• What is this problem about?

This video goes over a real problem from Unit S Concept 7. This concept is dealing with solving equations that contain half angle formulas that could be substituted into the equation in order to simplify it further. This problem makes use of previous concepts and  even previous units that deal with the unit circle radians. This concept allows us to research back into what we have learned earlier and just basically put it all to use. For example, we also make use of powering up in order to simplify further. Factoring is also something in which this problem entails for us to know in order to simplify and get the correct exact answer.

• What does this viewer need to pay special attention to in order to solve the problem correctly?

This viewer needs to pay special attention to the half angle formula we plug into this equation and why. They need to also pay attention to how that formula is dealt with in the problem, being that there is a radical and it may be confusing. The viewer also needs to be able to see how we were able to substitute in a variable for cosx in order to factor and get rid of the square. The process in solving this problem can get confusing so I suggest that the viewer pay special attention to the steps taken to first get the problem into a form that we can work with such as getting rid of the radical, squaring both sides, and factoring.