Question Number 27844 by bmind4860 last updated on 15/Jan/18
$${For}\:\alpha\epsilon{R},\:{cos}\alpha{cosx}+{siny}\geqslant{sinx},\:{then} \\ $$$${find}\:{the}\:{sum}\:{of}\:{the}\:{possible}\:{values}\:{of} \\ $$$${sin}\alpha+{siny}. \\ $$
Commented by bmind4860 last updated on 16/Jan/18
$${please}\:{help} \\ $$