Question

10. Tentukan nilai x pada gambar berikut! A (2x+5°) 57° D с 3x-2⁰ 2x + 7⁰ C​

Answer 1

Verified answer

Jawaban:

Gambar 1.

∠ADB + ∠BDC = Berpelurus

(2x + 5°) + 57° = 180°

2x + 5° + 57° = 180°

2x + 62° = 180°

2x = 180° - 62°

2x = 180° 118°

x = 118°/2

x = 59°

Gambar 2.

∠AOB + ∠BOC = Berpenyiku

3x - 2° + 2x + 7° = 90°

3x + 2x + 7° - 2° = 90°

5x + 5° = 90°

5x = 90° - 5°

5x = 85°

x = 85°/5

x = 17°

'비상' (Svt)