Today we began our class by starting a new section, section 8–4. We learned 2 new definitions: definitions of the Angle of Elevation and of the Angle of Depression.

Angle of Elevation: angle in which one leg is horizontal and the other leg goes up.

Angle of Depression: angle in which one leg in horizontal and the other leg goes down.

Be careful!

*In order for an angle to be classified as any of the angles above, it needs one horizontal leg!
*In one right triangle, if one acute angle is of elevation, it does not mean the other angle will be of depression!

These definitions will be used in word problems, so we are still going to use the theorems of the last sections.

After that, we talked about the quiz… which wasn’t so good. Don’t forget that in math the best way to learn is by practice. In case you want to improve your grade, there will be a Recuperation Test on Monday, which will be about chapter 7.
Don’t forget the homework! Page 422, # 8 – 26, all except 10 and 23
;D