**Trigonometry is commonly used in finding the height of towers and mountains.**

**It is used in navigation to find the distance of the shore from a point in the sea.**

** It is used in oceanography in calculating the height of tides in oceans**

**It is used in finding the distance between celestial bodies**

**The sine and cosine functions are fundamental to the theory of periodic functions such as those that describe sound and light waves**.

**Architects use trigonometry to calculate structural load, roof slopes, ground surfaces and many other aspects, including sun shading and light angles**