cosec
Units & Measurements abbreviation · Math
| Stands for | Cosecant |
|---|---|
| Categories | Units & Measurements |
cosec stands for Cosecant, a math abbreviation.
The form of cosecant used in British, Indian, Australian and many other textbooks, identical in meaning to the American csc: cosec θ = 1/sin θ.
Example: Prove that cosec²θ − cot²θ = 1.
Usage notes
Indian board exams and British A-level papers use cosec throughout. The identity cosec²θ = 1 + cot²θ follows from dividing sin²θ + cos²θ = 1 by sin²θ. The longer form makes the link to sine through the prefix "co-" easier to see than csc does.
Related abbreviations
More math abbreviations
- bn – Billion
- BODMAS – Brackets, Orders, Division/Multiplication, Addition/Subtraction
- C – Complex numbers
- cis – Cosine plus i sine
- Cor – Corollary
- cos – Cosine
- cosh – Hyperbolic cosine
- cot – Cotangent
- CPCTC – Corresponding parts of congruent triangles are congruent
- csc – Cosecant
- deg – Degree (angle)
- det – Determinant