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Question

If a map is placed in such a manner that east becomes southeast, then what will northeast become?

The correct answer is
East

Map Direction Rotation Explained

This question involves understanding how directions change when a map is rotated. We need to figure out the new direction of Northeast after a specific rotation is applied.

Understanding the Rotation

The problem states that the map is placed such that the direction 'East' now points towards 'Southeast'. Let's analyze this change:

  • The standard direction 'East' corresponds to 90 degrees on a compass (assuming North is 0 degrees).
  • The new direction 'Southeast' corresponds to 135 degrees on a compass.
  • The difference between the new direction and the original direction is:
    $135 \text{ degrees} - 90 \text{ degrees} = 45 \text{ degrees}$
  • Since Southeast is clockwise from East, the map has been rotated by 45 degrees clockwise.

Applying Rotation to Northeast

Now we need to find out where 'Northeast' will point after this 45-degree clockwise rotation.

  • The standard direction 'Northeast' corresponds to 45 degrees on a compass (midway between North at 0 degrees and East at 90 degrees).
  • We apply the same rotation of 45 degrees clockwise to this direction.
  • New angle = Original angle of Northeast + Rotation angle
    New angle = $45 \text{ degrees} + 45 \text{ degrees} = 90 \text{ degrees}$
  • The direction corresponding to 90 degrees on a compass is East.

Conclusion

Therefore, if the map is rotated so that East becomes Southeast, the Northeast direction will become East.

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Important Questions from Direction and Distance (Notes)

  1. Kajal left home for a hospital. She travelled 5 km towards East, then turned towards South-East to travel another 10 km, then again she turned towards North-East to travel 10 km and finally, she reached the hospital. In which direction is the hospital with respect to her home?
  2. If a map is placed in such a manner that east becomes southeast, then what will northeast become?
  3. The door of Aman's house faces east. From the back side of his house, Aman walks straight 30m. Again he walks 20m after turning to his left, then he turns to his right and walks 30m. Finally he turn towards north and walks 20m and stops. So, what is the distance between the starting and the end point?
  4. A woman leaves her home. She walks 40 m in North-West direction and then 90 m in South-East direction. Then, she moves 30 m in North direction. How far is she now from her initial position ?
  5. N sits to the North of L and West of M. L sits to the East of O. If everyone is facing North, which direction of O, is N?
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