फाइंड द मेजर ऑफ एक्स इन ईच ऑफ द फॉलोइंग फिगर स्टेप बाय स्टेप
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According to the problem,
x+90°+(180°-140°)=180°
x+90°+180°-140°=180°
x+90°=140°
x=140°-90°
x=50°
50° is the right answer.
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