Check Whether a page is using WordPress Custom Taxonomy Category

Well, today i faced a little problem on checking whether a page displaying on WordPress site is using a custom taxonomy post type. I need to determine whether that particular page is using a custom taxonomy post type and that particular page is using a particular custom taxonomy post category as well. In this case, i search a bit but couldn't find this answer easily which resulted me to write this in the case i need this in the future as well.