Bearings What are bearings Bearings are a directional
Bearings
What are bearings? • Bearings are a directional angle used to describe the direction an object is heading with relation to a specific direction. • Bearings are always given as an angle smaller than 90° in relation to the vertical directions (North and South). • Ex) N 30 E : “ 30 degrees east of north” • Ex) N 30 W : “ 30 degrees west of north” • Ex) S 30 E : “ 30 degrees east of south” • Ex) S 30 W : “ 30 degrees west of south” • Exceptions: when an object is headed along on of the axis • Ex) Due North, Due South, Due East, Due West
• N 30°E • N 50°W • S 45°W • S 80°E • Due North • Due West
Example 1: • Two ships leave port at 4 p. m. One is headed at a bearing of N 38 E and is traveling at 11. 5 miles per hour. The other is traveling 13 miles per hour at a bearing of S 47 E. How far apart are they when dinner is served at 6 p. m. ?
Example 2: • A plane leaves airport A on a bearing of 65° east of north and flies a distance of 100 km to pick up vital medical supplies at airport B. It then flies 220 km on a bearing if 30° east of south to deliver the supplies to airport C. How far does the plane have to travel from airport C to get back to airport A?
Another way to look at bearings Sometimes a problem will ask you to find the bearings to and from a location: A plane leaves on a bearing of 50 degrees east of south at 320 miles. It then goes 212 miles east of north at a bearings of 55 degrees. What are the bearings the plane has to take to get back to its starting position?
Homework Assignment 7 Worksheet
- Slides: 7