40°+(180°-105°)
40°+75°
115° (B)
Semoga membantu...
→ sudut ←
180° - 105° + 40° - x = 0
x = 115°
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40°+(180°-105°)
40°+75°
115° (B)
Semoga membantu...
→ sudut ←
180° - 105° + 40° - x = 0
x = 115°