In an isosceles Δ ABC, if AC-BC and AB2-2AC2 , then LC is euqal to :(

1.	In an isosceles Δ ABC, if AC-BC and AB2-2AC2 , then LC is euqal to :(A)450(B) 600(C) 30°(D)900
Answer» AB²=2AC²=AC²+AC²AB² =AC²+BC² { given AC=BC} Hence ABC is a right angled triangle with angle C = 90° because AB is the longest side and the angle opposite to longest side is largest. Option (D) is correct.

In an isosceles Δ ABC, if AC-BC and AB2-2AC2 , then LC is euqal to :(A)450(B) 600(C) 30°(D)900

Answer»

AB²=2AC²=AC²+AC²AB² =AC²+BC² { given AC=BC}

Hence ABC is a right angled triangle with angle C = 90° because AB is the longest side and the angle opposite to longest side is largest.

Option (D) is correct.