Question

kak tolong kerjakan itu
soalnya besok di kumpulkan
pliss jawab​

Answer 1

Jawaban:

8) ab = 4 cm

sudut c = 30°

perbandingan sudut istimewa 30°

s : t : a = 2 : 1 : √3

s = sisi miring = ac

t = tinggi = ab

a = alas = bc

panjang ac

s : t = 2 : 1

ac : ab = 2 : 1

ac/4 = 2/1

ac = 8 cm

9) ab = x

bc = x

panjang ac

sin a = bc/ac

sin 45° = x/ac

√2/2 = x/ac

ac√2 = 2x

ac = 2x/√2 -- rasionalkan

ac = 2x/√2 x √2/√2

ac = 2x√2/2

ac = x√2 cm

Answer 2

Jawaban:

90 (+45-) 2 3 3 maaf kalo salah ini jawababanya