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3.4.4 Trigonometry (A-level only)

Card 1 of 21

The sine addition formula is

sin⁡(A+B)=\htmlStyle[...]. \sin(A+B)=\htmlStyle{display:none;}{}\text{[...]}. sin(A+B)=\htmlStyle[...].
A

12cos⁡2x+32sin⁡2x\frac12\cos2x+\frac{\sqrt3}{2}\sin2x21​cos2x+23​​sin2x

B

The sine addition formula is

sin⁡(A+B)=\htmlStylesin⁡Acos⁡B+cos⁡Asin⁡B. \sin(A+B)=\htmlStyle{display:none;}{}\boxed{\sin A\cos B+\cos A\sin B}. sin(A+B)=\htmlStylesinAcosB+cosAsinB​.
C

When the denominator is zero: 1−tan⁡Atan⁡B=01-\tan A\tan B=01−tanAtanB=0.

D

Use the same sign as in A±BA\pm BA±B.

Card 1 of 21

3.4.4 Trigonometry (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /3.4.4 Trigonometry (A-level only)

21 flashcards on CCEA A Level Maths 3.4.4 Trigonometry (A-level only): the key formulae, methods and definitions you need to recall for AS 1, AS 2, A2 1 and A2 2.

Flashcards