O-LevelMathematicsGeometry4024/12 · May/June 2016 · Q173 Marks
In the diagram, the bearing of B from A is 170°. The bearing of A from C is 060°. The bearing of C from B is x°. [Figure 17.1] Given that triangle ABC is isosceles, find the three possible values of x.
- (a)In the diagram, the bearing of B from A is 170°. The bearing of A from C is 060°. The bearing of C from B is x°. [Figure 17.1] Given that triangle ABC is isosceles, find the three possible values of x.[3]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2016). The mark or mark type is shown in brackets.
- [3*] 280, 295, 310
- C2 for two correct values
- OR B2 for two from 70°, 40° and 55° seen
- OR B1 for 70° seen
- or for 10° or 120° correctly positioned on diagram
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