" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(1+cosx)+(1+cosx)/(1-cosx)(1+cosx)=2cosc²x
2/1+cosx-cosx-cos²x=2cosc²x
2/sen²x=2cosc²x
2cosc²x=2cosc²x