In trigonometric equations, what term describes the first angle solution provided by a calculator?
The principal value.
Only after finding all possible values for the whole angle (3θ−20∘)(3\theta-20^\circ)(3θ−20∘) in the transformed interval.
The period of sine and cosine is 360∘360^\circ360∘, whereas the period of tangent is 180∘\boxed{180^\circ}180∘.
In the expression tan2x\tan^2 xtan2x, the ratio (tangent value) is squared, not the angle (xxx).
Flashcards for Edexcel A Level Maths 10.4 Solving Trigonometric Equations, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 25 cards, matched to the Edexcel A Level Maths (9MA0) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.
