How do you calculate height of transmission tower?

To calculate the height of a transmission tower, you can use the formula for the angle of elevation from a known distance. Measure the horizontal distance from the observation point to the base of the tower and the angle of elevation to the top of the tower using a clinometer or theodolite. Then, apply the tangent function: height = distance × tan(angle). Alternatively, you can also use trigonometric methods or tools like GPS for more precise measurements.