22. Perhatikan gambar berikut! A B 2a K 4a + 18 Besar sudut ZBOC adalah.... A. 24° B. 66° C. 114° D. 156°
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Jawaban:
Kok jawabannya 64° ya
Penjelasan dengan langkah-langkah:
90° = AOB + BOC
90° = 2a + 4a + 18
90° = 6a + 18
90° - 18 = 6a
72 = 6a
a = 72/6
a = 12
BOC = 4a + 18
= 4(12) + 18
= 48 + 18
= 64