Skip to content

Course home

3.4.7 Trigonometry (A-level only)

Card 1 of 22

A trigonometric identity is true for [     ] of the variable.

A

The reciprocal identity for cosecant is cosec⁡x≡\cosec x\equivcosecx≡ 1sin⁡x\boxed{\frac{1}{\sin x}}sinx1​​.

B

sin⁡2x≡2sin⁡xcos⁡x\sin2x\equiv2\sin x\cos xsin2x≡2sinxcosx

C

A trigonometric identity is true for all permissible values of the variable.

D

Substitute the double-angle forms, then cancel to get sin⁡xcos⁡x\frac{\sin x}{\cos x}cosxsinx​.

Card 1 of 22

3.4.7 Trigonometry (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /3.4.7 Trigonometry (A-level only)

22 flashcards on CCEA A Level Maths 3.4.7 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