삼각형의 변과 각 사이의 관계 및 각의 함수를 다루는 수학의 한 분야.
The branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.
예문:
"Trigonometry is essential for calculating distances in astronomy and navigation."
"The architect used trigonometry to determine the precise slope of the roof."
"Advanced trigonometry involves complex identities and wave functions."