tolong bantu ya pliss
Matematika
kadekarie
Pertanyaan
tolong bantu ya pliss
1 Jawaban
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1. Jawaban andikaryandinata
7y + 15 + 8y = 90°
15y + 15 = 90°
15y = 90 - 15
15y = 75
y = 75/15
y = 5
besar sudut CBD
= 8y
= 8 x 5
= 40°