Today's Class 6/03/09

Mrs. Saatkamp began the class today by giving our quizzes back. The grades were not the best so far so Mrs. Saatkamp tols us that in order to be able to understand our future chapters we need to understand better chapter 8, so I would recomend you to study a little bit more. Then Mrs. Saatkamp answered some questions from the quiz.

6) In this kind of questions you have to use pythagorem theorem so we could use calculator to solve it.




11) Because the triangle is equilateral we can infer that the three angles are congruent, each one measuring 60°. The perimeter of the triangle is 48 so divide it by three and each side should be 16. For this question we had to use the table we learned.



Then we began a new lesson. We learned two new terms:

Angle of Elevation: an angle with a horizontal side and the other side facing up




Angle of Depression: and angle with a horizontal side and the other facing down





So here are some hints so you dont confuse the angles in a right triangle



So in thsi right triangle the
green angle: angle of elevation
pink angle: angle of depression
Be really careful with the blue angle which is NOT a angle of depression. If there was a line from the vertex then the angle formed would be a angle of depression (in this case, the pink angle), this is because the line that was drawn is parallel to the horizontal line.

Todays homework due on Monday is page 422 # 10 to 23 except for 10 and 23

So that was today´s class and dont forget that the recuperation test for CHAPTER 7 is on Monday after school.