tolong dibantu cepat ya kaka pliissss
Jawab:
trigonometri
pada gambar
ΔABC siku di B
<A = 30°
BC = 10
hitung
a) AB
tan A = BC/AB
AB = BC/tan 30 = 10/(1/√3)
AB = 10√3
b) AC
sin A = BC/AC
AC = BC/sin A
AC = 10/ sin 30 = 10/(1/2)
AC = 20
c. <C
<C = 90 - <A
<C = 90 - 30
<C = 60
