Page 24 - E-MODUL RASIO TRIGOMETRI UAS

Contoh

Hitunglah:

0
a. tan 30 + tan 45 0

0
b. sec 0 + sec 45 0
c. cosec 30 ͦ+ cosec 90 ͦ
sec 0 ͦ+sec60 ͦ

Jawab:
1
1
0
0
a. tan 30 + tan 45 = √3 + 1 = (√3 + 3)
3 3
1
0
0
b. sec 0 + sec 45 = 1 + 1 = + 1 1 = 1 + 2 = 1 + √2
cos0 ͦ cos 45 ͦ 1 √2 √2
2
1 1
1 + 1 1 + 1
3
ͦ
c. cosec 30 + cosec 90 ͦ = sin 30 ͦ sin 90 ͦ 2 1 = 2+1 = = 1
1 = 1
1
sec 0 ͦ+sec60 ͦ + + 2+1 3
cos 0 ͦ cos 60 ͦ 1 1
2

c. Rangkuman

1. Definisi Perbandingan Trigonometri pada Segitiga Siku-Siku


1. Sinus  = =

2. Cosinus  =  =

3. Tangen  =  =



4. Cotangen  = =


5. Secan  = =


6. Cosecan  = =


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