tolong jawaban dan cara penyelsaiannya A.4akar3 + 8 B.6akar2 + 4 C.15akar3 - 4 D.12akar3 + 4 E.12akar2 +8

∆ABC siku-siku di B => AC = sisi miring = 4
Sudut BAC = sudut A = 30°

Cos A = samping/miring
Cos 30° = AB/AC
1/2 √3 = AB/4
AB = 2√3

Sin A = depan/miring
Sin 30° = BC/AC
1/2 = BC/4
BC = 2

AB + BC = 2√3 + 2