Question

Soal nomor 4,tolong bantu ya;)

Answer 1

Dik
F1 = 8 satuan
F2 = 4 satuan
α  = 60
R = ?

R^2 = F1^2 + F2^2 + 2.F1.F2.cos 60
R^2 = 8^2 + 4^2 + 2.8.4.0,5
R^2 = 64 + 16 + 32
R^2 = 112
R     = √112
R     = √16.7
R     = 4√7 satuan

Yang B jawabannya


semoga membantu ^_^

Answer 2

Dik
A = 8 satuan
B = 4 satuan
α  = 60
R = ?

R^2 = A^2 + B^2 + 2.A.B.cos 60
R^2 = 8^2 + 4^2 + 2.8.4.0,5
R^2 = 64 + 16 + 32
R^2 = 112
R     = √112
R     = √16.7
R     = 4√7 satuan