Height of Object from Angle of Elevation Using Sine
You can find the height of an object from the angle of elevation and the distance to the top.[more]
In this Demonstration, the object is an obelisk, and the distance is found using a laser range finder.
The sine of an angle in a right triangle is the length of the opposite side divided by the hypotenuse. In this case, . Therefore, the height of the obelisk is given by .[less]