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= 45°
b) Nilai z =
3z° = y°
3z° = 45°
z = 15°
3. a) sudut x = 180°- (90°+50°) = 180° -140° = 40°
b) sudut y = 90°- 40° = 50°
c) sudut z =180°- 40° - 50° = 90°
Maaf, saya hanya tahu yang ini