Jawabanmu

2014-06-03T09:20:22+07:00
AC = b = 3
AB = c = 3
Oleh karena A = 60 maka B + C = 120.
AB = AC maka B = C = 60
artinya segitiga ABC sama sisi
cos A = cos B = cos C = cos 60 = 1/2
2014-06-03T09:26:20+07:00
ac = b = 3
ab= c = 3
Oleh karena A = 60 maka B + C = 120.
ab = AC maka B = C = 60
artinya segitiga ABC sama sisi
cos A = cos B = cos C = cos 60 = 1/2