KOSM di Hotel Quality Shah Alam 2006

1. EARTH AS A SPHERE
9.4 Understand and use the
concept of distance on the
surface of the earth to solve
problems

2. LEARning OuTcOmES
Find the shortest distance
between two points on the
surface of the earth.

3. A B
(37o
N, 54o
W)
(37o
N, 126o
E)

4. A B

5. A B
(37o
N, 54o
W)
(37o
N, 126o
E)
180o
Answer

6. The distance between A and B
= 180o
x 60’
= 10 800 nautical mile

7. A B

8. A B
37o
37o
O
∠AOB
Next
0o

9. ∠AOB = 180 – (37o
x 2)
= 106o
Back

10. The distance between A and B
= 106o
x 60’
= 6 360 nautical mile

11. ConClusion
The shortest distance from
one point to another on the
surface of the earth is along a
great circle.