Meaning & Definition of word "Sine"
Sine
/ˈsaɪn/
noun:
- 1. In trigonometry, sine is a function that relates the angle of a right triangle to the ratio of the length of the side opposite the angle to the length of the hypotenuse.
- Example: The sine of a 30-degree angle is 0.5.
- 2. A mathematical function that describes the wave-like patterns in various fields such as physics and engineering.
- Example: The wave can be described using the sine function to represent its oscillatory nature.
- 3. In geometry, the sine function is often abbreviated as 'sin'.
- Example: The relationship sin(θ) = opposite/hypotenuse is fundamental in trigonometry.
Etymology
●From Latin 'sinus', meaning 'bay' or 'fold', derived from its geometric interpretation.
Common Phrases and Expressions
sine qua non:
An essential condition or element.
sine die:
Without assigning a day for a further meeting.
Related Words
cosine:
A trigonometric function representing the ratio of the length of the adjacent side to the hypotenuse.
tangent:
A trigonometric function that represents the ratio of the opposite side to the adjacent side.
Slang Meanings of sine
Meaning: A term often used to refer to a close friend in mathematics or physics circles.
● Example Sentence: He's my sine; we solve problems together.