Jawabanmu

Jawaban paling cerdas!
2014-06-08T20:59:39+07:00
Jawab :

n1 sin i = n2 sin r
1 sin 45 = n2 sin 30
1 .1/2 \sqrt2 = n2 1/2
1/2  \sqrt2 = 1/2 n2
n2 = 1/2  \sqrt2 : 1/2
n2 = \sqrt2
2 3 2