Hi Khan Academy India! Just writing on your masterfully built Class 10 Math India CBSE course, in its Hinglish and English editions. All that remains is to enable mastery for Applied Trig and Circles units, so students can see it in Course and Mastery Challenges.
But both units are tiny, so I strongly suggest merging them into the Trigonometry and Areas of Circles units. In doing so, however, please don't worry about rephrasing unit titles differently than NCERT. Users can still see the lessons, and realise that ultimately your course covers it all.
So please merge applied trig into intro trig, and rename the unit to "Trigonometry: Basics and Applications". Similarly, merge Circles into Areas of Circles, and rename the unit to Circles: Basics and Areas". Then you'll have the same content, with Unit Tests and Challenges for all units. The course still helps with the CBSE Board exams, and arguably even better so—and users can still access only Applied trig by going over to the lessons.
I strongly encourage you to make this update as soon as you can. Class 10 Math is near-perfect, and this update will make it the best course ever for CBSE Class 10th Maths. It's the one-stop-shop for classrooms and self-paced study for anybody taking Class 10th Exams. And it just requires editing order of mapped content on your site.