" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
c²=a²+b²-2ab cos 30°
=2²+(2√3)²-2*2*(2√3) *1/2 √3
=16-12
c=√4=2
jadi panjang AB adalah 2