If the angle of elevation of the sun is 30 degrees, how tall is a 10-meter pole

Practice Questions

Q1
If the angle of elevation of the sun is 30 degrees, how tall is a 10-meter pole casting a shadow of 10√3 meters? (2023)
  1. 5 m
  2. 10 m
  3. 15 m
  4. 20 m

Questions & Step-by-Step Solutions

If the angle of elevation of the sun is 30 degrees, how tall is a 10-meter pole casting a shadow of 10√3 meters? (2023)
  • Step 1: Understand that the angle of elevation of the sun is 30 degrees.
  • Step 2: Know that the height of the pole and the length of the shadow form a right triangle with the angle of elevation.
  • Step 3: Use the tangent function, which relates the angle to the opposite side (height of the pole) and the adjacent side (length of the shadow).
  • Step 4: The formula for tangent is tan(angle) = opposite/adjacent. Here, opposite is the height of the pole and adjacent is the length of the shadow.
  • Step 5: For an angle of 30 degrees, tan(30) = 1/√3.
  • Step 6: Set up the equation: Height = Shadow * tan(30).
  • Step 7: Substitute the values: Height = 10√3 * (1/√3).
  • Step 8: Simplify the equation: Height = 10 meters.
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