A man is standing 25 meters away from a vertical pole. If he looks up at an angl

Practice Questions

Q1
A man is standing 25 meters away from a vertical pole. If he looks up at an angle of 45 degrees, what is the height of the pole?
  1. 25 meters
  2. 20 meters
  3. 30 meters
  4. 15 meters

Questions & Step-by-Step Solutions

A man is standing 25 meters away from a vertical pole. If he looks up at an angle of 45 degrees, what is the height of the pole?
Correct Answer: 25 meters
  • Step 1: Understand that the man is looking up at a pole from a distance of 25 meters.
  • Step 2: Recognize that the angle of 45 degrees means that the height of the pole and the distance from the man to the pole are equal.
  • Step 3: Use the tangent function, which relates the angle to the opposite side (height of the pole) and the adjacent side (distance from the man to the pole).
  • Step 4: Calculate the height of the pole using the formula: Height = distance * tan(angle).
  • Step 5: Since tan(45 degrees) equals 1, the calculation becomes Height = 25 meters * 1.
  • Step 6: Conclude that the height of the pole is 25 meters.
  • Trigonometry – The problem involves using the tangent function to relate the height of the pole to the distance from the pole and the angle of elevation.
  • Angle of Elevation – Understanding that the angle of elevation from the man's line of sight to the top of the pole is crucial for applying the tangent function correctly.
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