" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Cos 60° = 1/2
Sen 30° .Cos 60° = 1/2.1/2 = 1/4
1/4 - 3/4 = -2/4 = -1/2
Saludos!