" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a² + b² = c² ⇒ dibagi c²
a²÷c² + b²÷c² = c²÷c²
(a/c)² + (b/c)² = 1
(sin a)² + (cos a)² = 1 (terbukti)