Guys Bantuin Dong???

tan 30 =sin 30/ cos 30
sehingga 2× sin30 2 × 1/2
-------- --------------- 2×1/3×akar3
cos30 1/2×akar3
----------------------------=------------------------------------ = ------------------- = 1/2 akar 3
1 + (sin30)(sin30) 1+ (1/2)(1/2)
------------------- ---------------------------- 1+1/3
(cos30)(cos30) (1/2akar3)(1/2akar3)
dari hasil akhir diperoleh 1/2 akar3 =sin60
koment aja kalau nggak ngerti
#followyahhkak