Definition

Relating to the branch of mathematics that deals with the relationships between the angles and sides of triangles.

Example

The trigonometrical functions are essential for solving problems in geometry and physics.

Conversation

I was trying to solve this trigonometrical problem for homework.

Oh, those can be tricky! What’s the question?

It involves finding the angles of a triangle using trigonometrical ratios.

Got it! I can help you work through it.

Synonyms & Antonyms

Root Explanation

Trigonometrical → It is formed from "trigonon" (from Greek "trigonon", meaning triangle) and "metron" (from Greek "metron", meaning measure) along with the suffix "-ical" (meaning pertaining to). The word "trigonometrical" refers to something that pertains to the measurement of triangles.

Memory Tip

Think of 'triangle' ('trigonon') and 'measure' ('metron') to remember that 'trigonometrical' relates to measuring triangles.

Visually Confused Words