Podcast
Questions and Answers
What is the sine of an angle in a right-angled triangle, expressed using cosecant?
What is the sine of an angle in a right-angled triangle, expressed using cosecant?
- sin θ = 1 / cosec θ (correct)
- cosec θ = 1 / sin θ (correct)
- sin θ = cot θ
- sin θ = cosec θ
Which of the following is correct regarding the cotangent function?
Which of the following is correct regarding the cotangent function?
- cot θ = sec θ / cosec θ
- cot θ = tan θ
- cot θ = 1 / tan θ (correct)
- cot θ = 1 / sin θ
How is the cosine of an angle related to secant?
How is the cosine of an angle related to secant?
- cos θ = 1 / sec θ (correct)
- cos θ = sec θ / 1
- sec θ = 1 / cos θ (correct)
- sec θ = cos θ
What is the relationship between tangent and cotangent?
What is the relationship between tangent and cotangent?
Which of the following statements about trigonometric ratios is accurate?
Which of the following statements about trigonometric ratios is accurate?
Flashcards
Trigonometric Ratios
Trigonometric Ratios
Ratios of sides in a right-angled triangle related to acute angles.
sin θ
sin θ
Ratio of opposite side to hypotenuse.
cos θ
cos θ
Ratio of adjacent side to hypotenuse.
tan θ
tan θ
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Reciprocal trigonometric ratios
Reciprocal trigonometric ratios
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Study Notes
Trigonometric Ratios
- Trigonometric ratios are ratios of sides of a right-angled triangle.
- Ratios are based on acute angles.
- Ratios are also called T-ratios.
- The angle of reference is an acute angle.
Relationships in Trigonometry
cos θ = 1/sec θsec θ = 1/cos θsin θ = 1/cosec θcosec θ = 1/sin θ
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