trigonometry
nounUK /ˌtrɪɡəˈnɒmətri/
US /ˌtrɪɡəˈnɑːmətri/
Trigonometry is the math of triangles and their angles.
In trigonometry class, we learned how to find the height of a tree using its shadow.
OTHER MEANINGS
2. The branch of mathematics that studies how the sides and angles of triangles relate to each other.
Engineers use trigonometry to calculate the forces in a bridge.
3. A school or college course that teaches the relationships between angles and sides of triangles.
She is taking trigonometry this semester to prepare for calculus.
4. The practical use of triangle-based calculations in fields like surveying, navigation, or astronomy.
Sailors once relied on trigonometry to find their position at sea.