S6 3D Trigonometry HKDSE Past Paper

tkyggb, Jan 19, 2016

3D Trigonometry HKDSE Past Paper


  • 1. Folding Aeroplane (HKCEE 1999 )
  • 2. 2006 HKCEE Q17 (90 deg)
  • 3. HKCEE-AM 2006 Q17
  • 4. HKCEE 2009 Q17
  • 5. HKCEE 2010 Q15
  • 6. HKCEE-AM 2010 Q17 part a+b
  • 7. HKCEE-AM 2010 Q17 part c
  • 8. HKCEE-AM 2010 Q17 additional part
  • 9. HKCEE 2011 Q17
  • 10. HKDSE Sample Paper I #18
  • 11. HKDSE Practice Paper I #18
  • 12. HKDSE 2012 Paper I #18
  • 13. HKDSE 2013 Paper I #18
  • 14. HKDSE 2014 Paper I #17
  • 15. HKDSE 2015 Paper I #19
  • 16. HKDSE 2016 Paper I #19
  • 17. HKDSE 2017 Paper I #19
  • 18. HKDSE 2018 Paper I #17
  • 19. HKDSE 2019 Paper I #18
  • 20. HKDSE 2020 Paper I #19
  • 21. HKDSE 2021 Paper I #18
  • 22. HKDSE 2022 Paper I #18
  • 23. HKDSE 2023 Paper I #17

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Folding Aeroplane (HKCEE 1999 )

In the figure, ABC is an equilateral triangle of side 24 cm and BD = DE = EF = FC. It is folded to form an aeroplane by dragging the red point so that D and F coincide. The aeroplane is supported by two vertical sticks BM and CN so that A,B, D, F, C lie on the same plane.[br](a) Find the distance between the tips, B and C, of the wings of the aeroplane.[br](b) Find the inclination of the wings of the aeroplane to the horizontal ground.[br](c) Find the length of the stick CN.
Folding Aeroplane (HKCEE 1999 )
– Anthony OR 柯志明

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