O-LevelMathematicsGeometry4024/11 · Oct/Nov 2023 · Q154 Marks
B, C and D are points on the circle, centre O. AB and AC are tangents to the circle. Angle BAC = 38°. Work out [Figure Circle Geometry]
- (a)angle ABC[1]
- (b)angle BOC[2]
- (c)angle BDC.[1]
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 (Oct/Nov 2023). The mark or mark type is shown in brackets.
- [1] (a) 71
- [2] (b) 142
- [2] M1 for angle ABO = 90 or angle ACO = 90 soi If 0 scored, SC1 for answer equals 2 × their (a)
- [1] (c) 71
- [1] FT their (b) ÷ 2
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