Question Number 6058 by FilupSmith last updated on 11/Jun/16
$$\mathrm{sin}\left({a}\right)=\mathrm{sin}\left(−{a}\right) \\ $$$$\mathrm{For}\:\mathrm{what}\:\mathrm{values}\:\mathrm{of}\:{a}\:\mathrm{is}\:\mathrm{the}\:\mathrm{statement}\:\mathrm{true}? \\ $$
Commented by Rasheed Soomro last updated on 11/Jun/16
$${a}=\pi{n}\:\forall{n}\in\mathbb{Z} \\ $$$$ \\ $$