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Questions and Answers
Which civilization created the earliest-known tables of values for trigonometric ratios?
Which civilization created the earliest-known tables of values for trigonometric ratios?
- Greeks
- Egyptians
- Babylonians
- Indians (correct)
What is the etymological origin of the word 'trigonometry'?
What is the etymological origin of the word 'trigonometry'?
- Sanskrit origin, meaning 'calculation of ratios'
- Arabic origin, meaning 'science of celestial bodies'
- Greek origin, meaning 'study of angles'
- Latin origin, meaning 'measurement of triangles' (correct)
What did Sumerian astronomers use for angle measure?
What did Sumerian astronomers use for angle measure?
- Degrees (correct)
- Gradients
- Radians
- Revolutions
What application areas have historically utilized trigonometry?
What application areas have historically utilized trigonometry?
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What are trigonometric identities commonly used for?
What are trigonometric identities commonly used for?
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Study Notes
Trigonometry History and Basics
- The Babylonians created the earliest-known tables of values for trigonometric ratios.
Etymology of Trigonometry
- The word 'trigonometry' originates from the Greek words 'tri' meaning three, 'gon' meaning angle, and 'metry' meaning measure.
Early Astronomy
- Sumerian astronomers used a sexagesimal (base-60) system for angle measure, which is why we have 360 degrees in a circle and 60 minutes in an hour.
Applications of Trigonometry
- Trigonometry has historically been utilized in:
- Navigation
- Physics
- Engineering
- Computer Science
Trigonometric Identities
- Trigonometric identities are commonly used for:
- Solving triangular problems
- Simplifying complex expressions
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