" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
sen(x+x) = senx cosx +cosx senx [A]
sen(x -x) = senx cosx - cosx senx [B]
--------------------------------------...
sen(x+x) +sen(x-x) = 2senx cosx Sumando las expresiones [A]+[B]
sen2x +sen0 = 2senxcosx
sen2x = 2senxcosx ya que sen0 =0
Por tanto
senx cosx= sen2x/2
Un saludo