If a and b two disjont set then n (a union b)
Question
Maths
Sept. 16, 2020, 4:20 p.m.
Answer
D and E are points on sides BA and CA respectively in triangle ABC such that CD = BE. From
D and E two perpendiculars DX and EY are drawn on BC. If DX = EY, prove that
triangle ABC is isosceles.