MathDB
Chisinau MO p138 1977 VIII isosceles, <A=40^o , BC:AD=\sqrt3

Source:

March 17, 2021
geometryisoscelesangles

Problem Statement

In an isosceles triangle BACBAC (AC=AB| AC | = | AB |) , point DD is marked on the side ACAC. Determine the angles of the triangle BDCBDC if A=40o\angle A = 40^o and BC:AD=3|BC|: |AD|= \sqrt3.