# Does anybody know what came first for trigonometric functions?

• kramer733
In summary, trigonometric functions are mathematical functions that relate the angles of a triangle to the lengths of its sides. They have been used in ancient civilizations and were given formal names later on. The first trigonometric function is a debated topic and the word "trigonometry" comes from the Greek words for triangle and measure. Trigonometric functions have various real-life applications in fields such as engineering, physics, and navigation. They are also used in industries like construction to calculate angles and distances.
kramer733
I want a timeline for trigonometric function and how it was developed. Just like who created it and stuff like that. Did the greeks know about trigonometric functions? Is a tangent in calculus the same as a tangent in trigonometry and the function os a trigonometry? How do trigonometric functions apply to right angle triangles?

## 1. What are trigonometric functions?

Trigonometric functions are mathematical functions that relate the angles of a triangle to the lengths of its sides. The most common trigonometric functions are sine, cosine, and tangent.

## 2. Did trigonometric functions exist before their names?

Yes, the concepts and calculations behind trigonometric functions were used in ancient civilizations, such as the Babylonians and Egyptians, long before they were given formal names.

## 3. Which came first: sine, cosine, or tangent?

This is a debated topic among historians and mathematicians. Some argue that sine was the first trigonometric function, while others believe it was either cosine or tangent.

## 4. What is the origin of the word "trigonometry"?

The word "trigonometry" comes from the Greek words "trigonon" meaning triangle and "metron" meaning measure. Therefore, it can be translated to "measuring triangles".

## 5. How are trigonometric functions used in real life?

Trigonometric functions have many practical applications in fields such as engineering, physics, and navigation. They are also used in various industries, such as construction, to calculate angles and distances.

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