Question

D
If AB-BC - AC in the figure
(all angles of equation are equal)
​

Answer 1

Step-by-step explanation:

In△BEC:

∠EBC+∠BEC+∠BCE=180

∘

⟹55

∘

+x+∠BCE=180

∘

⟹∠BCE=125

∘

−x−(1)

In△BDA

⟹55

∘

+75

∘

+∠BAD=180

∘

⟹∠BAD=50

∘

∵∠A=∠C

⟹∠BAD=∠BCE

⟹∠BCE=50

∘

puttingin(1)

⟹50=125−x

⟹x=75

∘