Question Number 10190 by ketto last updated on 29/Jan/17

Commented byFilupSmith last updated on 29/Jan/17

∠ADB=45°  and   ∠BAD=90°  ∴∠ABD=45°  ∴ AB=y=AD  let BD=x  x^2 =2y^2  ⇒ y=(x/(√2))  (x=(√2)y)     thinking. I don′t remember geometry.

Commented bysandy_suhendra last updated on 29/Jan/17

I think there is something miss in this question

Commented byFilupSmith last updated on 29/Jan/17

that expains it. otherwise this would  be easy