trigonometrical
Definition
Adjective - Relating to trigonometry, which is the branch of mathematics dealing with the relationships between the sides and angles of triangles.
Usage Examples
- (Relating to the mathematical study of triangles.)
- (A table that lists sine, cosine, and tangent values.)
Advanced Usage
"Trigonometrical identity": an equation that is true for all values of the variables involved, such as sin²θ + cos²θ = 1.
- The proof required the use of several trigonometrical identities. (The proof relied on equations from trigonometry.)
"Trigonometrical ratio": a ratio of the lengths of two sides of a right-angled triangle, such as sine, cosine, or tangent.
- In a right triangle, the trigonometrical ratios are constant for a given angle. (The ratios of sides are fixed for each angle.)
Variants and Related Words
- Trigonometry (noun): the mathematical study of triangles and their angles.
- Trigonometry is essential for engineering and physics. (The field of study.)
- Trigonometric (adjective): a more common variant of "trigonometrical", meaning the same thing.
- The trigonometric functions are used in wave analysis. (Relating to trigonometry.)
Synonyms
- Angular: relating to angles, but not specific to trigonometry.
- The angular measurements were precise. (Relating to angles.)
- Geometric: relating to geometry, which includes trigonometry.
- Geometric calculations often involve trigonometrical principles. (Pertaining to geometry.)
Related Idioms
- No common idioms or phrasal verbs exist for "trigonometrical," as it is a technical term.