Question

In triangle ABC,AB=AC and D is a point on AB such that. AD = DC=BC. Find ∠ BAC.​

Answer 1

Step-by-step explanation:

According to figure

x=2y(exterior angle=sum of interior opposite angles)

DBC=ACB=2y

BAC+ABC+BCA=180

Y+2y+2y=180

5y=180°

y=180/5=36°

∆BAC=36°

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