# C+S and C-S concept from Multiples and Sub multiples of Trigonometry

#C+S and C-S concept from Trigonometry by NERELLA SRINIVAS

[@TSReddy-ev4ip]

Thank you sir for clear explanation 😊

[@gayathri9908]

Thank you sir

[@ParvezKhan-cq2qz]

No one teaches these concepts thank you so much sir

[@johnaravapalli4314]

I think he is a faculty from Narayana cause the book which he is holding is the narayana book and I am also a narayana student.Indeed I came here cause I didn't understand the same problem which he just told in the first(32:11).Anyhow good explanation and thank you very much sir

[@kavithas6567]

I'm too a narayana student (9th ) , I was having the application doubt and got shocked after this comment that he is narayana faculty

[@hasanuddinkhan9679]

thank you sir it is very clear now'

[@jayanthikishan8271]

Good explanation sir.....

[@luckyakki917]

Thank you so much sir

[@padmad4625]

Super ga chepparu sir😊

[@nerella-srinivas]

Thank you

[@user-hn9eh9nr5x]

Thank you sir