Math Problem Statement
Solution
Let's solve the given questions in the image.
Question 1:
A man starts walking towards the south. After walking for 10 m, he turns left at a right angle. Then after walking for 15 m, he again turns left at a right angle. In what direction is he finally walking?
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Solution:
- Initially, the man is walking South.
- After walking 10 m, he turns left, so now he is walking East.
- Then, after walking 15 m, he again turns left, so now he is walking North.
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Answer: North (option (a)).
Question 2:
If the girl is facing North, then:
(a) In which direction and how far is the point C from point B?
(b) In which direction is the point D?
(c) Through what angle should the girl turn to face the point F?
Part (a):
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From the diagram, point C is 40 m to the North-East of point B.
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Using Pythagoras’ theorem, the distance between B and C can be calculated:
- (as it is explicitly mentioned in the question).
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Answer: Point C is 40 m to the North-East of point B.
Part (b):
- From the diagram, point D is directly to the South-East of the girl.
- Answer: Point D is in the South-East direction.
Part (c):
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To face point F, the girl needs to turn from facing North to South-East.
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The angle of turn required is (clockwise).
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Answer: The girl should turn 120° clockwise to face point F.
Would you like detailed step-by-step calculations for any of the above solutions? Let me know!
Related Questions:
- If the man turned right instead of left in Question 1, which direction would he end up walking?
- What is the shortest distance from point B to point D based on the diagram?
- How would the direction to point F change if the girl initially faced South?
- What angle should the girl turn if she initially faced East to face point C?
- Calculate the distance between points C and D using their directions.
Tip:
When solving directional problems, always sketch the directions step by step to avoid confusion and ensure accuracy.
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Math Problem Analysis
Mathematical Concepts
Directional reasoning
Pythagoras' theorem
Angles of rotation
Formulas
Pythagoras' theorem: a^2 + b^2 = c^2
Angle calculation: Final Angle = Initial Angle ± Turn Angle
Theorems
Pythagoras' Theorem
Suitable Grade Level
Grades 6-8