Mathematics A-Level
small angle formulas
What small angle formulas means in Mathematics A-Level, as defined for WJEC.
Definition of small angle formulas
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Reference: WJEC
sin θ ≈ θ, cos θ ≈ 1 − θ²/2 and tan θ ≈ θ, where θ is in radians.
Topics that use small angle formulas
- Trigonometry (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- composite trigonometric arguments
- domain and range
- double angle formulas
- exact trigonometric values
- harmonic form
- inverse trigonometric functions
- mixed angle equations
- power reduction identities
Using small angle formulas in the exam
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