Bearings
A compass always points north. Bearings are measured from the north line, always in a clockwise direction.A scale drawing is an enlarged or reduced drawing of an object that is similar to an actual object. Maps and floor plans are smaller than the actual size.
Summary
A compass always points north. Bearings are measured from the north line, always in a clockwise direction.A scale drawing is an enlarged or reduced drawing of an object that is similar to an actual object. Maps and floor plans are smaller than the actual size.
Things to Remember
- A bearing is an angle, measured clockwise from the north direction.
- Bearings are a measure of direction, with north taken as a reference. If you are traveling north, your bearings is 100°.
- Using bearings, scale drawing can be constructed to solve problems.
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Bearings
Bearing
The bearing is an angle measured clockwise from the north direction. If you are travelling north, your bearing is 000°. If you are travelling in any other direction, your bearing is measured clockwise starting from the north. In the figure, the different direction shown by a compass are sketched.
Example 1
Note that the first two bearing above is in directly opposite direction to each other.They have a different bearing, but they are exactly 180° apart as they are in opposite direction.
A line in the opposite direction to the third bearing above would have bearing of 150 because 330°-180°=150°
These bearing in the opposite direction are called back bearing or reciprocal bearing.
Example 2
Find the bearing for:
- East(E)
- South (S)
- South-East (SE)
Solution:
- The bearing of E is 090°
- The bearing of S is 180°
- The bearing of SE is 135°
Lesson
Bearings and Scale Drawings
Subject
Compulsory Maths
Grade
Grade 8
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