10-1

This week in advanced math we completed a nine weeks. Through this nine weeks we learned chapters 7-9. We learned everything from converting degrees to radians to navigation. From the trig chart and radius circle to the Laws of Sine and Cosine. The thing I grasped best from these chapters were all of chapter 7, all of chapter 8 except for 8-4, and all of chapter nine except for navigation. Now we are in chapter 10. In chapter 10 we are learning how to solve for alpha and beta using the formulas from chapter 9. This is Mrs. Robinson's favorite section in the book.

Ex. Find the value of cos(20degrees)cos(10degrees)= sin(20degrees)sin(10degrees)

cos(20+10)=cos30degrees

cos30degrees= square root of 3/2