2c - lesson 29 - elevation and depression.notebook · 2c lesson 29 elevation and...
TRANSCRIPT
2C Lesson 29 Elevation and Depression.notebook
1
March 08, 2019
10
p 1162)196.61 7) 6.17 m 8) 29.44 ft
p 117 #1
2C Lesson 29 Elevation and Depression.notebook
2
March 08, 2019
How is the angle of elevation or depression measured?
There are tools
Surveyors use this all the time
A job that uses trig daily ...
2C Lesson 29 Elevation and Depression.notebook
3
March 08, 2019
Since we don't have the fancy surveying tools, how do we know the angle of elevation or depression?
We use a CLINOMETER
Pick a spot to measure the height of.
Look through the straw at that spot.
Teammates need to note the angle from the clinometer.
Measure your eye height and your distance from the base of the object.
Draw a diagram and model the situation as a triangle; solve for x. Don't forget to incorporate your height!
0
180
10170
20160
30150
40140
50130
60
120 70
110 80
10090
90
152°
100
80
110
70
120
60
130
50
140
40
150
30
160
20
170
10
180
0
Reading a clinometer
p 119 120 can rip out for activity
There is an app for this...
2C Lesson 29 Elevation and Depression.notebook
4
March 08, 2019
Object:
Team Member Name Eye level height Angle Distance
from object
Object height above eye level
Overall object height
Diagrams:
Up for a challenge? Choose an object BELOW eye level!
measure measure measure Calculate Calculate
2C Lesson 29 Elevation and Depression.notebook
5
March 08, 2019
Object:
Team Member Name Eye level height Angle Distance
from object
Object height above eye level
Overall object height
Freeman 64 36 98
Kelsey 66 28 132
Reynolds 58 35 110
Jones 64 48 65
measure measure measure Calculate Calculate
Why is Mr. Jones distance so much lower than Mr. Freeman's even though they are the same height?
2C Lesson 29 Elevation and Depression.notebook
6
March 08, 2019
Assignment: p 122 # 1316
0180
10170
20160
30150
40140
50
13060
120 70
11080
100
90
90
160°
100
80
110
70
120
60
130
50
140
40
150
30
160
20
170
10
1800
Exit:
Is the clinometer showing an angle of elevation or depression?
What is that angle?