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Question
A man goes 18 m due east and then 24 m due north. Find the distance of his current position from the starting point?
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Solution
Let the initial position of the man be “O” and his final position be “B”.
By Pythagoras theorem
In the right ∆OAB,
OB2 = OA2 + AB2
= 182 + 242
= 324 + 576 = 900
OB = `sqrt(900)` = 30
The distance of his current position is 30 m
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