If I is the incentre of ΔABC , if ∠ BIC = 1200 , then what is the measure of ∠ BAC?
If I is the incentre of ΔABC, then∠ BIC = 90 0 + ∠ BAC/2 1200 =90 0 +∠ BAC /2 1200 -90 0 =∠ BAC/2 ∠ BAC/2 = 300 ∠ BAC = 60 0
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If I is the incentre of ΔABC, then∠ BIC = 90 0 + ∠ BAC/2 1200 =90 0 +∠ BAC /2 1200 -90 0 =∠ BAC/2 ∠ BAC/2 = 300 ∠ BAC = 60 0
