Mathematics GCSE
inverse trigonometric functions
What inverse trigonometric functions means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of inverse trigonometric functions
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Reference: Pearson Edexcel
Used to find an angle from two known sides: if opposite = 3 cm and hypotenuse = 6 cm, then sin θ = 3/6 = 0.5, so θ = sin⁻¹(0.5) = 30°.
Topics that use inverse trigonometric functions
- Geometry and measures - Mensuration and calculation (Pearson Edexcel GCSE)
Related terms
- Arc
- arc length
- area and volume units
- area of a segment
- Chord
- Circumference
- Composite shapes and solids
- Congruence
Using inverse trigonometric functions in the exam
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