10-2

This week in advanced math we started on Chapter 10 and took some quizzes on Chapter 10. In Chapter 10-1 we learned some of the formulas for cos(alpha +/- beta) and sin(alpha +/- beta). We also learned Chapter 10-2, which involves formulas for tan(alpha + beta) and tan(alpha - beta). And the same for cot. Then we learned 10-3 which involves Double formulas and Half formulas. For ex. double formulas such as Sin2(alpha) =2Sin(alpha)Cos(alpha). And Half formulas such as Sin alpha/2 = +/- the square root of 1-cos(alpha)/2. This is a chapter full of formulas and you will make an A or F based on if you know the formulas or not.

10-2

simplify tan 25 degrees + tan 5 degrees/1 + tan 25 degrees(tan 5 degrees)

=tan(25 degrees + 5 degrees)

=tan 30 degrees

=square root of (3)/3