- 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
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