Page 28 - Trigonometri
P. 28
CONTOH SOAL 1
Hitunglah
csc 30° + csc 60° + csc90°
sec 0° + sec 30° + sec 60°
Jawaban:
1 1 1
csc 30° + csc 60° + csc90° sin 30° + sin 60° + sin 90°
=
sec 0° + sec 30° + sec 60° 1 + 1 + 1
cos 0° cos 30° cos 60°
1 1 1
1 + 1 + 1 2 + 2 3 + 1 3 + 2 3
2 2 3 3 3
= = = = 1
1 1 1 2 2
1 + 1 + 1 1 + 3 3 + 2 3 + 3 3
2 3 2
