Geometry; 3/16

We spent some time reviewing some major topics from chapter 8 today:  geometric means, similar triangles, pythagorean theorem, specials right triangles, and trig application problems.  The students did one of each type as a group and then got feedback on their success.  They then got started on the chapter 8 review sheet.  The chapter 8 test is on Monday.


Assignment:  Chapter 8 review sheet


Review Sheet Answers

Right Triangles

1.  3 radical 10
2.  2 radical 3 over 3
3.  13
4.  25
5.  12 radical 2
6.  2 radical 11
7.  obtuse
8.  acute
9.  right
10.  x = 8 radical 3;  y = 4 radical 21;  z = 8 radical 7
11.  x = 7;   y = 7 radical 3
12.  x = 12
13.  x = 28
14.  x = 34
15.  34 degrees

Applications of Trigonometry

1.  26 meters
2.  21 meters
3.  51 meters
4.  48 degrees
5.  135 meters
6.  2400 meters
7.  140 meters

Trigonometry

1.  radical 3 over 2
2.  1/2
3.  radical 3 over 1
4.  1/2
5.  radical 3 over 2
6.  radical 3 over 3
7.  0.9397
8.  0.8480
9.  0.2493
10.  77 degrees
11.  8 degrees
12.  61 degrees
13.  x = 27
14.  x = 17
15.  x = 51
16.  x = 11
17.  x = 26
18.  52 degrees
19.  a.  sketch     b.  150 meters