A kite is flying at a height of 40 meters. If the string makes an angle of 60 de

Practice Questions

Q1
A kite is flying at a height of 40 meters. If the string makes an angle of 60 degrees with the ground, how long is the string?
  1. 20√3 meters
  2. 40 meters
  3. 80 meters
  4. 60 meters

Questions & Step-by-Step Solutions

A kite is flying at a height of 40 meters. If the string makes an angle of 60 degrees with the ground, how long is the string?
  • Step 1: Understand that the height of the kite is 40 meters.
  • Step 2: Know that the string makes an angle of 60 degrees with the ground.
  • Step 3: Use the sine function to relate the height of the kite to the length of the string. The formula is: height = length of string * sin(angle).
  • Step 4: Rearrange the formula to find the length of the string: length of string = height / sin(angle).
  • Step 5: Substitute the values into the formula: length of string = 40 / sin(60 degrees).
  • Step 6: Calculate sin(60 degrees), which is √3/2.
  • Step 7: Substitute sin(60 degrees) into the formula: length of string = 40 / (√3/2).
  • Step 8: Simplify the equation: length of string = 40 * (2/√3) = 80/√3.
  • Step 9: To express the length in a simpler form, multiply the numerator and denominator by √3: length of string = (80√3) / 3.
  • Step 10: The final answer is approximately 20√3 meters.
  • Trigonometry – The problem involves using the sine function to relate the height of the kite to the length of the string based on the angle with the ground.
  • Right Triangle Properties – Understanding the relationship between the sides and angles in a right triangle is crucial for solving the problem.
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