數學試卷答案 – St. Stephen’s Girls’ College Form 2 Math Final Exam 2019-20

數學試卷答案 – St. Stephen’s Girls’ College Form 2 Math Final Exam 2019-20

試卷答案

Section A

1. \(\sqrt{\dfrac{3}{363}} , 0.6\)
2. \(4\sqrt{2}\)
3. \(\sqrt{13}\)
4. \(4\sqrt{3}\)
5. 48
6. \(\dfrac{\sqrt{10}}{2}\)
7. ΔABC: Yes, ΔPQR: Yes, ΔXYZ: No
8. 156
9. 56
10. x = 30°
    y = 90°
11. 15
12. x = 30°
    y = 80°
13. 15
14. 684°
15. 64.6°
16. x = 7.71
    y = 24
17. 0
18. \(\dfrac{1}{tan\theta}\)
19. 60°
20. 25°
21. 5 : 1
22. Plan C
23. 6 : 8 : 9
24. 120 Japanese Yen

Section B

25. 15
26. 13 cm
27. a) AD = 24, AB = 40
    b) Yes
28. a) \(PS^{2} = 625-x^{2}\)
    b) \(PS^{2} = -1265+126x-x^{2}\)
    c) PS = 20
29. a) 15°
    b) 45°
    c) 7.5 cm
30. a) 30°
    b) 30°
    c) 120°
31. a) \(\dfrac{3}{5}\)
    b) i) ∠BEF = θ
       ii) FB = 6 cm
32. a) 30°
    b) \(\dfrac{5}{2}\)

St. Stephen’s Girls’ College Form 2 Math Final Exam 2019-20 試卷