Made a new thread for this as instructed by Plato. On to the limit itself

$\displaystyle \lim _{x\mapsto 0} \frac {\gamma + \delta \sin {x}}{x^2} = 3$

I found this in a book with exercises and although Plato mentioned it has no solutions the book says they're γ = 6 and δ = -6 . Also I double checked it and there is no x in front of γ .