1. Triangle ABC is a right angled triangle. D and E are mid points of AB and BC respectively. Read the following statements. I. AE = 19 II. CD = 22 III. Angle B is a right angle. Which of the following statements would be sufficient to determine the length of AC?






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  • By: anil on 05 May 2019 02.37 am
    ABC is right angled triangle. D and E are mid points of AB and BC respectively. As it is not given that which angle is 90°. So we need statement (III) to find the value of AC. Whereas using statement (I) & (II) alone, we cannot find the value of AC. But using all the three statements. We can find value of $$(AB)^2 + (BC)^2$$. Hence, the value of $$AC = sqrt{(AB)^2 + (BC)^2}$$ using Pythagoras Theorem. => Ans - (E) : All statements are required.
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