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Question
Choose the most appropriate option for the following question.
A man walks 1 km. towards East and then he turns to South and walk s 5 kms. Again he turns to East and walks 2 kms. After this he turns to North and walks 9 kms. Now, how far is he from his starting point?
Options
5 kms
4 kms
9 kms.
10 kms.
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Solution
5 kms
Explanation:
The direction diagram of a man is as follows:
BO = CD = 2 km
and AB + BO = AO
1 + 2 = 3 km
In Δ AOE,
AE2 = EO2 + OA2
AE2 = 42 + 32
AE2 = 16 + 9
AE2 = 25
AE = 5 km
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