Mathematics · essential
Supplementary and allied angle identities for JEE
Trigonometrical identities and trigonometrical functions
Formula
\[\sin(\pi-x)=\sin x,\quad \cos(\pi-x)=-\cos x,\quad \tan(\pi-x)=-\tan x,\\ \sin(\pi+x)=-\sin x,\quad \cos(\pi+x)=-\cos x,\quad \tan(\pi+x)=\tan x,\\ \sin(2\pi-x)=-\sin x,\quad \cos(2\pi-x)=\cos x,\quad \tan(2\pi-x)=-\tan x\]
Variables: \(x\in\mathbb{R}\).
Conditions: Where defined.
Reduction to acute angles and solving equations.