Mathematics A-Level
Pythagorean trigonometric identities
What Pythagorean trigonometric identities means in Mathematics A-Level, as defined for AQA.
Definition of Pythagorean trigonometric identities
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Reference: AQA
Three fundamental identities: sin²θ + cos²θ ≡ 1, sec²θ ≡ 1 + tan²θ and cosec²θ ≡ 1 + cot²θ.
Topics that use Pythagorean trigonometric identities
- E: Trigonometry (AQA A-Level)
Related terms
- Algebraic manipulation
- Amplitude
- Asymptote
- Derivation and manipulation of identities
- Domain and range restrictions for functions
- exact trigonometric values
- Graphical behaviour including asymptotes and ranges
- harmonic form
Using Pythagorean trigonometric identities in the exam
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