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Flip to reveal answersHow is a three-figure bearing measured?
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All 8 Flashcards — Bearings
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Question
How is a three-figure bearing measured?
Answer
Clockwise from North, written with three digits (e.g. 045°, 250°).
Question
Bearings of E, S, W?
Answer
East 090°, South 180°, West 270° (North is 000°/360°).
Question
How do you write a small bearing like 7°?
Answer
With three digits: 007°.
Question
What is a back bearing?
Answer
The reverse direction — add 180° (if under 180°) or subtract 180° (if 180° or more).
Question
Back bearing of 070°?
Answer
070° + 180° = 250°.
Question
Convert 'South-East' to a bearing.
Answer
135° (halfway between S 180° and E 090°, clockwise from N).
Question
How do you solve a two-leg journey problem?
Answer
Find the interior angle at the turn, then use the cosine rule (two legs + included angle).
Question
Why isn't the triangle angle just the difference of bearings?
Answer
You must use the North lines at the turning point — the interior angle usually involves a 180° relationship.
Read the notes
Full study notes for Bearings
Topic 3.3 hub
Bearings & elevation
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Math AA SL exam skills
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