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Very recently Tang et al. [Bull Iran Math Soc (2019)doi:10.1007/s41980-019-00262-y] have studied some majorization results for twocertain subclasses of the starlike functions associated with the sine andcosine functions defined by $\mathcal{S}^*_s$ and $\mathcal{S}^*_c$,respectively. In this note we pointed out that the definition of the class$\mathcal{S}^*_c$ and it's result are incorrect and give correct definition andresult.

A note on the paper "Tang et al. [Bull Iran Math Soc (2019) doi:10.1007/s41980-019-00262-y]"