德望學校 – S3數學 3B Chapter 9 Trigonometric Relations – CQ (13-18)

試卷答案:

1. 4 cm
2. a) \(sin\theta=\tfrac{2\sqrt{6}}{5}, cos\theta=\tfrac{1}{5}, tan\theta=2\sqrt{6}\)
   b) 10°
3. 60°
4. 36/5
5. a) –
   b) -1
6. a) –
   b) sinθ = 3/5, cosθ = 4/5
7. \(tan\theta=\tfrac{\sqrt{14}}{7}, cos\theta=\tfrac{\sqrt{7}}{3}\)
8. a) –
   b) 25°
9. a) 1/3
   b) \(\tfrac{1-cos\phi}{sin\phi}\)
10. a) –
    b) \(\tfrac{sin\phi}{1+cos\phi}\)
11. \(sin\theta=\tfrac{\sqrt{11}}{4}, tan\theta=\tfrac{\sqrt{55}}{5}\)
12. \(\tfrac{\sqrt{3}}{3}\)
13. 3
14. 0.5
15. \(\tfrac{2\sqrt{5}}{9}\)
16. \(\sqrt{3}\)
17. \(\tfrac{2\sqrt{5}}{15}\)
18. a) –
    b) 60°

< 返回 德望學校 – 中三數學考試 試題庫 主頁 >