Maths-
General
Easy
Question
In ∆ABC, ∠ABC = 90° AD is the median to BC and CE is the median to AB. If AC = 5 cm and AD = cm, find CE.
Hint:
Pythagoras' theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“. The sides of this triangle have been named Perpendicular, Base and Hypotenuse. Here, the hypotenuse is the longest side, as it is opposite to the angle 90°.
If a is the perpendicular, b is the base, and c is the hypotenuse, then according to the definition, the Pythagoras Theorem formula is given as
c2= a2 + b2
The correct answer is: Hence, the value of CE is 2√5 cm.
It is given that AD is the median to BC. So, BD = CD. It is also given that CE is the median to AB. So, AE = BE
Also, AC = 5 cm and AD = cm
Applying Pythagoras theorem in △ABD
AD2 = BD2 + AB2
Applying Pythagoras theorem in △BCE
CE2 = BE2 + BC2
Adding equations (1) and (2)
As △ABD is a right-angled triangle. So AB2 + BC2 = AC2
final answer:
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