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1.8.7 Solving trigonometric equations

Card 1 of 20

How can you identify whether an interval uses radians or degrees?

A

π\piπ indicates radians; a degree symbol indicates degrees.

B

Only values in [−1,1][-1,1][−1,1].

C

Over one full turn, cos⁡x=cos⁡α\cos x=\cos\alphacosx=cosα gives x=αx=\alphax=α or x=2π−α\boxed{x=2\pi-\alpha}x=2π−α​.

D

The solutions of tan⁡x=tan⁡α\tan x=\tan\alphatanx=tanα repeat according to x=α+nπ\boxed{x=\alpha+n\pi}x=α+nπ​, where nnn is an integer.

Card 1 of 20

1.8.7 Solving trigonometric equations Flashcards

  1. A Level
  2. /Maths
  3. /1.8.7 Solving trigonometric equations

20 flashcards on AQA A Level Maths 1.8.7 Solving trigonometric equations: the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.

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