SOLUTION: ∆BAC is right angled at A. The bisectors of angle B and C meet at O . Find angle BOC.

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Question 1060466: ∆BAC is right angled at A. The bisectors of angle B and C meet at O . Find angle BOC.
Answer by ikleyn(52852) About Me  (Show Source):
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= 360° -90° - 90%5Eo%2F2 = 225°.

360° is the sum of interior angles of the quadrilateral ABOC.

90° is the right angle A.

90%5Eo%2F2 is the sum of the measures of angles ABO and ACO.