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# How do I do this trigonometry question ? Watch

1. Three points A, B and C lie on a level plane.
B is 7 km from A on a bearing of 030°.
C is 5 km from B on a bearing of 280°.
i) Find the distance AC.
ii) Find the bearing of A from C
iii) Find the area of triangle ABC
All answers need to be in 3 significant figures.
2. (Original post by Marmite170899)
Three points A, B and C lie on a level plane.
B is 7 km from A on a bearing of 030°.
C is 5 km from B on a bearing of 280°.
i) Find the distance AC.
ii) Find the bearing of A from C
iii) Find the area of triangle ABC
All answers need to be in 3 significant figures.
what have you tried, are you able to post some workings? or maybe a diagram?
3. (Original post by Marmite170899)
Three points A, B and C lie on a level plane.
B is 7 km from A on a bearing of 030°.
C is 5 km from B on a bearing of 280°.
i) Find the distance AC.
ii) Find the bearing of A from C
iii) Find the area of triangle ABC
All answers need to be in 3 significant figures.
Have you drawn a diagram out? And btw next time post in the maths forum:

http://www.thestudentroom.co.uk/forumdisplay.php?f=38

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