यदि tan α=n tan β sin α=m sin β तो सिद्ध कीजिए कि cos^2 α=(m^2-1)/(n^2-1)

[@ShivParkash-hl9sj]

Thanks dear sir g😂

[@KingVivek-x4n]

Ba re sir

[@RahatShah-xg8gj]

😂😂😂😂😂😂

[@rohanartrrr]

Sir ji aap samjhte to acha he but aap ka video cilearyly thikhai nhi deta he jyada yambi ka dala kijiye 😊

[@RKMSSir]

मेरी 🆕 वीडियो देखो शायद उसमें आपको समस्या न हो