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building height Calculation Example surveying trigonometry # Calculation example – Calculate the height of a building

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**Calculate the height of a building by observing its top from two ground points and measuring corresponding vertical angles.**

**Known values:** Distance **(AB)=53m**, Angles **α****=50 ^{o}**,

**Solution:** Height **h** and distance **(BC)**.

By knowing height **h**, calculate distance **(BC)**:

Check:

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