1. The world in spatial terms
2. Places and Regions
3. Physical Systems
4. Human Systems
5. Environment and society
6. The uses of geography
Hope this helps! :)
Answer:
a. m<1+<2=90°
42.8+<2=90
b.<2=47.2
c.Because both angles are complementery.& the summation of two complementery angles are always 90°
Explanation:
The titanic?? This is a very vague question as a bunch of ships have sunk in a icy sea