Question:
ABC is a triangle right angled at C. If AB = 25 cm and AC = 7 cm, find BC.
ABC is a triangle right angled at C. If AB = 25 cm and AC = 7 cm, find BC.
Updated On: Dec 8, 2023
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Solution and Explanation
By applying Pythagoras theorem in \(Δ\;ABC\),
\((AC)^2+ (BC)^2= (AB)^2\)
\((BC)^2= (AB)^2- (AC)^2\)
\((BC)^2= (25)^2- (7)^2\)
\((BC)^2\) = \(625 - 49 = 576\)
\(BC = 24\) \(cm\)
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