image


Share with your friends

আশা করি বুঝতে পারবেন।image

Talk Doctor Online in Bissoy App
MdAbuSaeed

Call

sec(90°-@)= cosec@ এটা সূত্র। অথবা এটা দেখেন: sec(90°-@) =1/{cos(90°-@)} =1/sin@      [cos(90°-@)=sin@] =cosec@

Talk Doctor Online in Bissoy App