Calculating the height of tall objects using math can be tricky. Here are some common problems you might face:

1. Measurement Errors: It can be hard to measure angles and distances just right. Even a tiny mistake in measuring angles can lead to big errors when you try to figure out how tall something is.

2. Complex Terrain: If the ground is uneven or there are obstacles in the way, it can be tough to find the right spot to measure from.

3. Angle of Elevation: When you try to estimate how high something is from far away, you need to get the angle just right. This can be hard if there are things blocking your view.

To help with these problems, you can try:

• Higher Precision Instruments: Using special tools like theodolites or laser range finders can help you measure more accurately.
• Multiple Measurements: Taking several measurements and then averaging them can give you better results.
• Trigonometric Equations: You can use the tangent function to calculate height. The formula $h = d \tan(\theta)$ can help. Here, $h$ is the height, $d$ is how far you are from the object, and $\theta$ is the angle you measured.

By using these tips, you can make it easier to find the heights of tall objects!