10 Questions
What is the abbreviation for cosine A?
cos A
Which of the following is a trigonometric identity?
cot θ = sin θ / cos θ
In a right triangle ABC, right-angled at B, what is cotangent A?
rac { 1 }{ tanA }
What is the reciprocal of sin A?
cosec A
What does a trigonometric identity represent?
An equation involving trigonometric ratio of angle(s)
What is the abbreviation for secant A?
sec A
What does cot θ equal to?
rac { cos heta }{ sin heta }
What is the abbreviated notation for tangent A?
rac { tanA }{ 1 }
What is the relationship between cosecant A and sin A?
rac { 1 }{ sinA }
'A t-ratio only depends upon the angle ‘θ’ and stays the same for same angle of different sized right triangles.' What does this statement refer to?
The value of a t-ratio being constant for the same angle in different sized triangles
Study Notes
Trigonometric Concepts
- Cosine A is abbreviated as cos A.
- A trigonometric identity is an equation that is true for all values of the variables.
- In a right triangle ABC, right-angled at B, cotangent A is the ratio of the adjacent side to the opposite side.
- The reciprocal of sin A is cosecant A.
- A trigonometric identity represents a universal truth that is true for all angles and triangles.
- Secant A is abbreviated as sec A.
- Cot θ equals 1/tan θ.
- Tangent A is abbreviated as tan A.
- Cosecant A is the reciprocal of sin A, or 1/sin A.
- The statement "A t-ratio only depends upon the angle ‘θ’ and stays the same for same angle of different sized right triangles" refers to the property of trigonometric ratios being independent of the size of the triangle.
Test your knowledge of Chapter 8: Introduction to Trigonometry from NCERT Class 10 Maths with this quiz. Practice MCQ questions and enhance your understanding of right-angled triangles and trigonometric ratios.
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