CBSE Class 9 Answered
My question is in the document
Asked by Ayushgargsbl | 06 Mar, 2019, 11:45: AM
Expert Answer
Let x, y and z are the angles of triangle as shown in figure. EBC = x+z and OBC = (x+z)/2 because BO is bisector of EBC
Similarly OCB = (x+y)/2
hence BOC = 180-OBC-OCB = 180 - [ (x+z/2 ] - [(x+y)/2] = 180 -(x/2) -(x+y+z)/2 = 90-(x/2) = 90 - (1/2)BAC
Answered by Thiyagarajan K | 06 Mar, 2019, 12:49: PM
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