Card 1 of 20
The fundamental Pythagorean identity is [...]\text{[...]}[...].
A
(sinx−cosx)(sinx+cosx)(\sin x-\cos x)(\sin x+\cos x)(sinx−cosx)(sinx+cosx)
B
It is true only for particular values of xxx.
C
The fundamental Pythagorean identity is sin2x+cos2x≡1\boxed{\sin^2x+\cos^2x\equiv1}sin2x+cos2x≡1.
D
The reciprocal identity for cosecant is cosecx≡1sinx\boxed{\cosec x\equiv\frac{1}{\sin x}}cosecx≡sinx1.
Card 1 of 20
1.8.8 Proofs with trigonometric identities Flashcards
20 flashcards on AQA A Level Maths 1.8.8 Proofs with trigonometric identities: the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.