in cyclic quadrilateral ABCD, LA=LC-40.Find LA
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Answer:
LA=70°
Step-by-step explanation:
LA+LC=180°
LC-40°+LC=180°
2LC-40°=180°
2(LC-20°)=180°
LC-20°=90°
LC=90°+20°
LC=110°
LA=LC-40°
LA=110°-40°
LA=70°
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