C - Unsolved numerical question
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Practice Questions
Test your understanding with targeted questions
What is EDM and how does it work?
💡 Hint: Think about how sound travels.
Why do we need to correct for the heights of instruments?
💡 Hint: Consider the physical positions of the EDM and the reflector.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does EDM stand for?
💡 Hint: Think about the purpose of EDM.
True or False: The vertical angle is not important when calculating horizontal distance.
💡 Hint: Reflect on the role of angles in trigonometry.
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Challenge Problems
Push your limits with advanced challenges
A surveyor measures a slope of 1000 m at a height of 3 m and has a vertical angle of 7°. Calculate the horizontal distance.
💡 Hint: Use a scientific calculator for trig functions.
If an EDM measures a distance of 500 m at a height of 1.5 m above ground, what is the horizontal distance when the vertical angle is 2°?
💡 Hint: First calculate the cosine, then adjust for height.
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