Angle of Elevation
![Use this diagram to answer the question below. *Hint: use the adjustable diagram to help!](https://stage.geogebra.org/resource/an6k78uf/LccbidCDOzKkeLtj/material-an6k78uf.png)
A cable of length 45 metres is anchored from the ground to the top of a communications mast. The angle of elevation of the cable to the top of the mast is 60°. Find the height of the communications mast, to the nearest metre.
What ratio did you use to solve the question above?