Matematika 20. Perhatikan gambar berikut! Besar ZBAD adalah: A. 30° B. 34° C. 36° D. 40°​

daijaparkerulv – March 07, 2023

20. Perhatikan gambar berikut! Besar ZBAD adalah: A. 30° B. 34° C. 36° D. 40°​

Jawaban:

cari nilai x

180° = 54° + 6x

6x = 180° - 54°

6x = 126°

x = 126/6

x = 21

cari nilai ∠ADB

m∠ADB = 180° - 4x°

m∠ADB = 180° - 4(21)°

m∠ADB = 180° - 84°

m∠ADB = 96°

cari nilai ∠BAD

180° = ∠ABD + ∠ADB + ∠BAD

180° = 54° + 96° + ∠BAD

m∠BAD = 180° - (54° + 96°)

m∠BAD = 180° - 150°

m∠BAD = 30°

Apollo110

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