Question

Tlng di jawab pakai cara lengkap yaaa...

Answer 1

<A = 90° (mungkin disoal typo)
<B = 36°
<C = 180°-(<A+<B)
= 180° - (90°+36°)
= 180° - 126° = 54° (C)

......

<A-<B = 76° → <A = 76°+<B
<C = 180°- 150° = 30°

180° = <A + <B + <C
180° = (76°+<B) + <B + 30°
180° = 106° + 2<B
2<B = 180°-106°
2<B = 74°
<B = 74°/2 = 37° (B)