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Questions and Answers
Which trigonometric function is abbreviated as 'sin'?
Which trigonometric function is abbreviated as 'sin'?
- Tangent
- Cosine
- Sine (correct)
- Cosecant
What are the three main functions in trigonometry?
What are the three main functions in trigonometry?
- Sine, Cosine, and Cosecant
- Sine, Secant, and Tangent
- Sine, Cosine, and Tangent (correct)
- Sine, Secant, and Cosecant
What is the abbreviation for the cosine function?
What is the abbreviation for the cosine function?
- sin
- tan
- cos (correct)
- sec
What is the ratio of the sine function for any angle 'θ' in a right-angled triangle?
What is the ratio of the sine function for any angle 'θ' in a right-angled triangle?
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Which triangle is of most interest in trigonometry?
Which triangle is of most interest in trigonometry?
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Study Notes
Trigonometric Functions
- 'Sin' abbreviates the sine function in trigonometry.
- The three main trigonometric functions are sine (sin), cosine (cos), and tangent (tan).
Cosine Function
- The abbreviation for the cosine function is 'cos'.
Sine Function Ratio
- The sine function ratio for any angle 'θ' in a right-angled triangle is defined as the length of the opposite side divided by the length of the hypotenuse: sin(θ) = opposite/hypotenuse.
Triangle in Trigonometry
- The right-angled triangle is of most interest in trigonometry due to its unique properties that relate angles and side lengths, enabling the definitions of trigonometric functions.
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