Question
If O is the orthocentre of ÎABC , if â BOC =
1400 then what is the measure of â BAC?Solution
If O is the orthocentre of ÎABC, then â BOC + â BAC = 180 0 or 1400  + â BAC  = 180 0  or â BAC = 180 0  - 1400   = 400 Â
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