A geometric figure characterized by three edges and three vertices, commonly referred to as a triangle, which is a fundamental shape in mathematics and geometry.
A term used in mathematics that encompasses concepts related to the measurement of angles and sides, often involving functions that relate to triangles, such as sine, cosine, and tangent.
A specific type of relationship in which three entities are interconnected, often used to describe complex dynamics in a love triangle or other social situations involving three parties.
A physical structure or item that is shaped like a triangle, such as a triangular prism or a triangular cloth used for bandaging.
A colloquial term denoting a location where three roads converge, often referred to as a junction or intersection.
A complex romantic relationship involving three individuals, where emotional entanglements create tension and conflict between the parties involved.
An arrangement where one person is romantically linked to two others, often leading to jealousy and rivalry, typically seen in scenarios involving one male and two females or one female and two males.
A mathematical function that relates the angles of a triangle to the lengths of its sides, commonly applied in the study of right triangles and characterized by sine, cosine, tangent, and their corresponding reciprocal functions.
A set of functions defined based on the angles of a triangle, which can be extended to include angles beyond those in right triangles, involving relationships between the coordinates of points in a coordinate system and their angles from the origin.
Functions that describe the relationships between an angle and the ratios of specific sides in a triangle, applicable to various fields such as physics and engineering for analyzing periodic phenomena and waveforms.
Example:
多くの人間にとって三角関数を学ぶことは無意味であるように思える。
A triangular piece of fabric typically cut from a square cloth, used for medical purposes such as securing bandages or as a sling for supporting injured limbs.
A versatile piece of cloth often utilized in first aid and emergency situations, or worn on the head by workers for protection or hygiene.
A triangular bandage made by folding a square cloth diagonally, serving various functions including wound care and practical uses in cooking or manual labor.
A large triangular muscle that covers the shoulder joint, originating from the scapula and clavicle and attaching to the humerus; responsible for raising the arm horizontally.
The muscle that gives the shoulder its rounded shape, enabling various arm movements by contracting in different directions.
A muscle that plays a crucial role in shoulder mobility, allowing for both lifting and rotating the arm.