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FFUUNNGGSSII && GGRRAAFFIIKK FFUUNNGGSSII 
TTRRIIGGOONNOOMMEETTRRII 
Oleh: 
Suratno, S.Pd 
SMAN 1 Kaliwungu 
1 
GRAFIK FUNGSI TRIGONOMETRI 
Oleh: 
Suratno, S.Pd 
SMAN 1 Kaliwungu 
1 
FUNGSI &GRAFIK FUNGSI 
TRIGONOMETRI 
Aururia Begi Wiwiet Rambang 
ACA 111 0064
2
3
4
5
AATTUURRAANN SSIINNUUSS 
c 
a = = 
SinC 
b 
SinB 
SinA
BBuukkttii :: 
CD= 
b SinΑ 
bSinA = aSinB 
SinB 
CD = 
a 
CD = b.SinA CD = aSinB 
b 
SinB 
a = 
SinA
CCOONNTTOOHH SSOOAALL :: 
Pada segitiga ABC, 
diketahui 
0 
c = 6, sudut B = 600 dan 
sudut C = 450. 
Tentukan panjang b !
PPEENNYYEELLEESSAAIIAANN :: 
b 
b 
c 
Sin Sin 
2 
6 
3 
6 
45 
= 
60 
= 
1 
2 
1 
2 
0 0 
= 
b 
SinC 
SinB 
2 
= ´ 
3 6 
3 6 
1 
1 
6 3 
= · 
6 6 
2 
2 
2 
2 
2 
2 
= = 
b 
b 
b
AATTUURRAANN KKOOSSIINNUUSS 
a2 =b2+c2-2bcCosA 
b2 =a2 +c2 -2acCosB 
c2 =a2 +b2 -2abCosC
CCOONNTTOOHH SSOOAALL :: 
Pada segitiga ABC, 
diketahui 
a = 6, b = 4 dan sudut C 
= 1200 Tentukan 
panjang c
PPEENNYYEELLEESSAAIIAANN :: 
c2 = a2 + b2 – 2.a.b.cos C 
c2 = (6)2 + (4)2 – 2.(6).(4).cos 1200 
c2 = 36 + 16 – 2.(6).(4).( – ½ ) 
c2 = 52 + 24 
c2 = 76 
c =√76 = 2√19
14 
Berhenti sejenak…
15 
b. Membuat Grafik Fungsi 
Trigonometri 
a. Grafik y = sin xo , 00 ≤ X ≤ 3600 
x 0 30 90 150 180 210 270 330 360 
y 0 ½ 1 ½ 0 -1/2 -1 -1/2 0
16 
1 
0 
-1 
90 0 180 0 
270 0 
360 0 
Y = sin x 
y 
x
SSiinnee ggrraapphhss 
y = sin(x) 
y = sin(3x) 
y = 3sin(x) 
y = sin(x – 3) 
y = sin(x) + 3 
y = 3sin(3x-9)+3 
y = sin(x) 
y = sin(x/3)
18 
b. Grafik y = Cos xo ; 00 ≤ X ≤ 3600 
x 0 60 90 120 180 240 270 300 360 
y 1 1/2 0 1/2 -1 - 1/2 -1 1/2 1
19 
1 
0 
-1 
90 0 180 0 
270 0 
360 0 
Y = Cos x
GGrraapphhss ooff ccoossiinnee 
y = cos(x) 
y = cos(3x) 
y = 3cos(x) 
y = cos(x – 3) 
y = cos(x) + 3 
y = 3cos(3x – 9) + 3 
y = cos(x) 
y = cos(x/3)
21 
c. Grafik y = tg xo 
x 0 45 90 135 180 225 270 315 360 
y 0 1 ∞ -1 0 1 ∞  1 0
22 
1 
0 
-1 
90 0 180 0 
270 0 
Y = Tg x 
360 0 
45 0 
135 0 315 0 
225 0
GGrraapphhss ooff ttaannggeenntt aanndd 
ccoottaannggeenntt 
y = tan(x) 
Vertical asymptotes at 
y = cot(x) 
x =p + np 
. Verrical asymptotes at x = np . 
2
GGrraapphhss ooff sseeccaanntt aanndd ccoosseeccaanntt 
y = sec(x) 
Vertical asymptotes at 
Range: (–∞, –1] U [1, ∞) 
y = cos(x) 
y = csc(x) 
Vertical asymptotes at 
Range: (–∞, –1] U [1, ∞) 
y = sin(x) 
x =p +np . 
x = np. 
2
Mohon maaf jika ada kesalahan maupun 
kekurangan selama presentasi ini. 
Tuhan Memberkati 
 BARISAN DAN DERET 
Hal.: 25

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Fungsi dan Grafik Fungsi Trigonometri

  • 1. FFUUNNGGSSII && GGRRAAFFIIKK FFUUNNGGSSII TTRRIIGGOONNOOMMEETTRRII Oleh: Suratno, S.Pd SMAN 1 Kaliwungu 1 GRAFIK FUNGSI TRIGONOMETRI Oleh: Suratno, S.Pd SMAN 1 Kaliwungu 1 FUNGSI &GRAFIK FUNGSI TRIGONOMETRI Aururia Begi Wiwiet Rambang ACA 111 0064
  • 2. 2
  • 3. 3
  • 4. 4
  • 5. 5
  • 6.
  • 7. AATTUURRAANN SSIINNUUSS c a = = SinC b SinB SinA
  • 8. BBuukkttii :: CD= b SinΑ bSinA = aSinB SinB CD = a CD = b.SinA CD = aSinB b SinB a = SinA
  • 9. CCOONNTTOOHH SSOOAALL :: Pada segitiga ABC, diketahui 0 c = 6, sudut B = 600 dan sudut C = 450. Tentukan panjang b !
  • 10. PPEENNYYEELLEESSAAIIAANN :: b b c Sin Sin 2 6 3 6 45 = 60 = 1 2 1 2 0 0 = b SinC SinB 2 = ´ 3 6 3 6 1 1 6 3 = · 6 6 2 2 2 2 2 2 = = b b b
  • 11. AATTUURRAANN KKOOSSIINNUUSS a2 =b2+c2-2bcCosA b2 =a2 +c2 -2acCosB c2 =a2 +b2 -2abCosC
  • 12. CCOONNTTOOHH SSOOAALL :: Pada segitiga ABC, diketahui a = 6, b = 4 dan sudut C = 1200 Tentukan panjang c
  • 13. PPEENNYYEELLEESSAAIIAANN :: c2 = a2 + b2 – 2.a.b.cos C c2 = (6)2 + (4)2 – 2.(6).(4).cos 1200 c2 = 36 + 16 – 2.(6).(4).( – ½ ) c2 = 52 + 24 c2 = 76 c =√76 = 2√19
  • 15. 15 b. Membuat Grafik Fungsi Trigonometri a. Grafik y = sin xo , 00 ≤ X ≤ 3600 x 0 30 90 150 180 210 270 330 360 y 0 ½ 1 ½ 0 -1/2 -1 -1/2 0
  • 16. 16 1 0 -1 90 0 180 0 270 0 360 0 Y = sin x y x
  • 17. SSiinnee ggrraapphhss y = sin(x) y = sin(3x) y = 3sin(x) y = sin(x – 3) y = sin(x) + 3 y = 3sin(3x-9)+3 y = sin(x) y = sin(x/3)
  • 18. 18 b. Grafik y = Cos xo ; 00 ≤ X ≤ 3600 x 0 60 90 120 180 240 270 300 360 y 1 1/2 0 1/2 -1 - 1/2 -1 1/2 1
  • 19. 19 1 0 -1 90 0 180 0 270 0 360 0 Y = Cos x
  • 20. GGrraapphhss ooff ccoossiinnee y = cos(x) y = cos(3x) y = 3cos(x) y = cos(x – 3) y = cos(x) + 3 y = 3cos(3x – 9) + 3 y = cos(x) y = cos(x/3)
  • 21. 21 c. Grafik y = tg xo x 0 45 90 135 180 225 270 315 360 y 0 1 ∞ -1 0 1 ∞  1 0
  • 22. 22 1 0 -1 90 0 180 0 270 0 Y = Tg x 360 0 45 0 135 0 315 0 225 0
  • 23. GGrraapphhss ooff ttaannggeenntt aanndd ccoottaannggeenntt y = tan(x) Vertical asymptotes at y = cot(x) x =p + np . Verrical asymptotes at x = np . 2
  • 24. GGrraapphhss ooff sseeccaanntt aanndd ccoosseeccaanntt y = sec(x) Vertical asymptotes at Range: (–∞, –1] U [1, ∞) y = cos(x) y = csc(x) Vertical asymptotes at Range: (–∞, –1] U [1, ∞) y = sin(x) x =p +np . x = np. 2
  • 25. Mohon maaf jika ada kesalahan maupun kekurangan selama presentasi ini. Tuhan Memberkati BARISAN DAN DERET Hal.: 25