#### Transcript of Scale and Bearings

The bearing of B from A is 127 . Work out the bearing of A from B.

307

The bearing of C from A is 140 . D is due North of C on the line between A and B. Given that the angle ACB is a right angle, find the bearing of C from B.

230

**Scale and Bearings**

Three rules for Bearings

**L.O. - To use bearings with scale drawings, and solve bearings problems.**

Bearings are angles measured:

1) In a clockwise direction

2) From a line drawn due North.

Bearings are always given using 3 figures to ensure clear transmission of information.

**Activities**

**Activity**

Answers

**Key**

Examples

Bearings and Scale Drawings

Bearings and Scale Drawings

Bearings Calculations

N

N

127

o

A

B

The bearing of B from A is 127 . Work out the bearing of A from B.

The bearing of C from A is 140 . D is due North of C on the line between A and B. Given that the angle ACB is a right angle, find the bearing of C from B.

Bearings Calculations

N

N

127

o

A

B

o

C

D

13

40

o

53

o

o

o

50

o

77

o

53

o

o

o

Activity

Complete the bearings and scale booklet.

Activity

Complete the bearings and scale booklet.

https://keshmathsdotcom1.files.wordpress.com/2015/11/77.pdf

Starter

Find the values of angles d and e. Give reasons for your answers.

Starter

Find the values of angles d and e. Give reasons for your answers.

d = 50 as it is corresponding to the 50 .

e = 60 as it is a triangle with a 90 and a 30 , which is 30 because the alternate angle is 50 and part is 20 , so the remainder is 30 .

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o

Activity

Complete the bearings challenges.

Activity

Complete the bearings challenges.

Part 4

- 295

- 300

- 271

- 122.5

Part 5

- A and B are the wrong way around in the sentence.

- Gone anti-clockwise instead of clockwise, should be 280 .

- Measured incorrect angle, should be 310 .

- Missing a 0, should be 070 .

- Letters wrong way round, should be "bearing of J from L".

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Full transcript