Chapter 9

Chapter 9 in Advance Math is a continuation of Geometry. We discovered how to fine the unknown side of a 90 degree triangle. In order to be succesful in this section, You have to remeber SOHCAHTOA.

SOHCATOA -
sin=opposite/hypotenuse
cos=adjacent/hypotenuse
tan=opposite/adjacent
csc=hypotenuse/opposite
sec=hypotenuse/adjacent
cot=adjacent/opposite

Example 1: For a triangle ABC, C=90 degrees, A=30 degrees, a= 24
1.Since angles A and C have already been defined, we have to solve for B. Subtract 30 and 90 degrees from 180 to get your answer. Angle C=60 degrees. All angles have been defined.
2. We were given angle A, so to solve for b and c use the functions above. To solve for b, use sin,which equals opp/hyp- sin30 degrees = b/24
3. Multiply both sides by b and continue solving - b=12
4.Now that we have solved for a and b, we must solve for c by using cos-adj/hyp.
cos30degrees=c/24,
5.Multiply c by both sides and get 12 square root of 3=20.784