Question

13. If one of the angles of an isosceles triangle is 125 degree then the angle between the bisectors of
the other two angles is​

Answer 1

Step-by-step explanation:

In isosceles triangle two angle are equal.

angle A = 125°

let , angle B = angle C = x°

Sum of all angles of a triangle = 180°

=> 125 + x + x = 180

=> 2x = 55

=> x = 22.5°

Bisector of the other two angles = angle OBC = angle OCB = (angle B) / 2 = 22.5 / 2 = 11.25°

Now, In triangle OBC,

angle BOC + angle OBC + angle OCB = 180°

=> angle BOC + 2× (angle OBC) = 180°

=> angle BOC = 180° - 2(11.25) = 157.5°

ANS.

Answer 2

Answer:

152.5

Step-by-step explanation: