Question

a = 2
square ABCD is surmounted
by an equilatene bridge EDC
D
B
A.​

Answer 1

Answer:

REF.Image

△BEC is an equilateral △le

⇒BE=EC=BC

But BC=CD(ABCD is a square)

⇒EC=CD⇒∠CED=∠CDE

In △ECD,∠CED+∠CDE+90+60=180

⇒2∠CED=30⇒∠CED=15

∘

∠BEC=60

∘

⇒x=60−15=45