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Trigonometric Identities and Equations

What is the period of the functions y=sin⁡xy=\sin xy=sinx and y=cos⁡xy=\cos xy=cosx?

A

360∘360^\circ360∘

B

180∘180^\circ180∘

C

The calculator's inverse trig functions (e.g. sin⁡−1\sin^{-1}sin−1) only provide the principal value (one angle).

D

cos⁡2x≡1−sin⁡2x\cos^2 x \equiv 1 - \sin^2 xcos2x≡1−sin2x

Trigonometric Identities and Equations Flashcards

  1. A Level
  2. /Maths
  3. /Trigonometric Identities and Equations

Flashcards for Edexcel A Level Maths Trigonometric Identities and Equations, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 22 cards drawn from 10.1 Angles in all four Quadrants, 10.2 Exact Values of Trigonometric Ratios, 10.3 Trigonometric Identities, 10.4 Solving Trigonometric Equations, 10.5 Harder Trigonometric Equations, and 10.6 Equations and Identities, 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.

Flashcards