Sum No. 4 Exercise 6.5 class 10th

 SUM NO.4:-ABC is an isosceles triangle right angled at C. Prove that
 AB2=2AC2
Solution :- Using Pythagoras theorem in △ACB 


 AB2=AC2+BC2

 AB2=AC2+AC2  (AC=BC)

               (ABC is an isosceles triangle right angled, ∴ AC=BC)

so, AB2=2AC2




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