This document discusses trigonometric functions including tangent, sine, and cosine. It provides examples of calculating trigonometric functions given angles in degrees and minutes. It also gives examples of converting between degrees/minutes and decimal degree measures of angles. Several word problems involving trigonometric functions are worked through.

1. Jawapan :
Tangen, Sinus dan Kosinus Bagi Sudut Tirus
1. tan Ɵ =
6
8
=
3
4
TOA
Trigonometri I

2. 2. a) tan Ɵ =
3
4
9
𝑥
=
3
4
3x = 36
x = 12
b) tan Ɵ = 2.6
26
𝑥
= 2.6
x =
26
2.6
= 10
Trigonometri I

3. 3. sin Ɵ =
4
5
4. a) sin Ɵ =
3
5
27
𝑥
=
3
5
x =
5
3
x 27
= 45
SOH
Trigonometri I

4. b) sin Ɵ = 0.6
𝑥
30
= 0.6
X = 0.6 x 30
= 18
Trigonometri I

5. 5. kos Ɵ =
8
17
6. a) kos Ɵ =
21
29
𝑥
29
=
21
29
x = 21
CAH
Trigonometri I

6. b) kos Ɵ = 0.8
𝑥
30
= 0.8
x = 0.8 x 30
= 24
Trigonometri I

7. Menukar nilai sudut dan saiz sudut bagi tangen, sinus dan
kosinus.
1. 26.3°
= 26° + 0.3°
= 26° + (0.3 x 60)’
= 26° + 18’
= 26°18’
Trigonometri I

8. 2. 14°24’
= 14° + 24’
= 14° + (
24
60
)°
= 14° + 0.4°
= 14.4°
Trigonometri I

9. 3. a) tan 48.8°
= 1.1423
b) sin 39°
= 0.6293
c) kos 64.3°
= 0.4337
Trigonometri I

10. 4. a) tan x = 0.4791
x = 25°36’
b) sin x = 0.2996
x = 17°26’
c) kos x = 0.7040
x = 45°15’
Trigonometri I

11. Penyelesaian Masalah
1. a)
Trigonometri I

12. b)
Trigonometri I

13. c)
Trigonometri I

14. 2. a)
Trigonometri I

15. b)
Trigonometri I

16. c)
Trigonometri I