AQA · Mathematics · 8300
GCSE Maths: Angles: back bearings
Geometry & Measures · AQA GCSE Maths (8300). Cards are generated from the Corbettmaths textbook exercise and practice questions for Angles: back bearings (Corbettmaths Video 27), and every card links back to the exact page it came from. Practice tests are drawn from this deck’s own cards. Source material © Corbettmaths — used with attribution.
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North is written as the bearing ?°.
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000
South is written as the bearing ?°.
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180
East is written as the bearing ?°.
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090
West is written as the bearing ?°.
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270
If the bearing of A from B is 025°, what is the bearing of B from A?
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205°. Add 180° to find the back bearing when the original bearing is less than 180°.
If the bearing of A from B is 222°, what is the bearing of B from A?
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042°. Subtract 180° to find the back bearing when the original bearing is greater than 180°.
How do you calculate a back bearing when the original bearing is greater than 180°?
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Subtract 180° from the original bearing.
South-East is written as the bearing ?°.
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135
North-West is written as the bearing ?°.
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315
What is a back bearing?
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The bearing of point A from point B, when you already know the bearing of point B from point A. It is the opposite direction, calculated by adding or subtracting 180°.
How do you calculate a back bearing from a given bearing?
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If the bearing is less than 180°, add 180°. If the bearing is greater than 180°, subtract 180°.
What scale notation means 1 cm on a map represents 10,000 cm in reality?
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1 : 10,000
On a map with scale 1 : 10,000, how many metres does 1 cm represent?
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100 metres (since 10,000 cm = 100 m)
How do you find the position of a point given bearings from two known locations?
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Draw bearing lines from each known location; the point lies at their intersection. This method is called triangulation.
When calculating distance travelled, use the formula: distance = ?
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speed × time
How many digits should a bearing always be written with?
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Three digits (using leading zeros if necessary, e.g., 015° or 090°)
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