This is the 126th most frequent Russian word.
таких
"Таких" means "such" or "of such" in English.
The word "таких" in this sentence is used to express a high degree or exceptional quality of the sunsets being referred to. It functions as a demonstrative adjective, in this context, to emphasize the uniqueness of the observed sunsets.
Я никогда не видел таких красивых закатов.
I have never seen such beautiful sunsets.
Here, "таких" is used to describe a particular type or kind of people, implying they have certain distinct characteristics. It modifies the noun "людей" to highlight its specificity.
Мы не встречали таких людей раньше.
We have not met such people before.
In this sentence, "таких" determines the noun "условиях," emphasizing that certain specific conditions are required to achieve success. It serves as a highlighting descriptor.