4MA0 Higher January 2015 Paper 3R Q11
11
Diagram NOT accurately drawn
Town B is 35 km east and 80 km north of town A.
Work out the bearing of A from B.
Give your answer correct to the nearest degree.
(4)
| Scheme | Marks |
|---|---|
| \(\tan A = \dfrac{80}{35}\) or \(\tan B = \dfrac{35}{80}\) | M1 |
| \((A =)\tan^{-1}\left(\dfrac{80}{35}\right)\) or \((B =)\tan^{-1}\left(\dfrac{35}{80}\right)\) | M1 |
| (A =) 66.37... or (B =) 23.62... | A1 |
| 204 | B1 |
| (4 marks) |
Notes
A1: Accept answers that round to 66 or 24 (allow answers without labels)
B1: Allow answers in range 203.6 - 204
ft for correct conversion to bearing