" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
sudut nya berapa
=COS^2A + (SIN^2A-1)/COS^2A
=COS^2A- COS^2A/COS^2A
=COS^2A-1
= -SIN^2A