Question

4. In A ABC, AC=BC and ZACB=90° then prove
AB2=2AC2​

Answer 1

Answer:

In ∆ABC

Angle C = 90°

AC=BC

according to above info:

Hypotenuse will be AB

therefore

(AB)²=(AC)²+(BC)²

since AC=BC

(AB)² = (AC)²+(AC)²

(AB)² = 2(AC)²

Hence prooooved