Jawabanmu

2014-05-17T08:40:39+07:00
Tanα=de/sa=3/4 Tanβ=12/5 Tanβ-α=33/20=1.65
Jawaban paling cerdas!
2014-05-17T17:27:48+07:00
Tan alfa-tan beta
=3/4-12/5
=-33/20
1 5 1