Question

Q. ABC is a triangle in which the internal bisectors of angles B and C meet in O then the magnitude of it is.
(b) 36° (c) 126° (d) 120° (a) 144 ​

Answer 1

Step-by-step explanation:

(d) 120°

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Answer 2

∠A=72∘

By angle sum property

∠A+∠B+∠C=180

∠B+∠C=180−72=108

∠OBC+∠OCB=54

The Angular bisectors Meet at O

So By Angle sum property ,

∠OBC+∠OCB+∠BOC=180

54+∠BOC=180−54

∠BOC=126