Page 30 - Trigonometri
P. 30
CONTOH SOAL 2
FI
sin 30° =
EF
1 FI
=
2 15
15
FI =
2
FI = 7.5 cm
1
luas trapesium = × (a + b) × tinggi
2
1
luas trapesium = × (6 + 10) × 7.5
2
luas trapesium = 60 cm
2
