Diketahui segitiga ABC dengan sisi BC=7cm, <A= 30° dan <c = 105° panjang sisi AC adalah…
(a/sin a) = (b/sin b)
(7/sin 30) = (b/sin 45)
(7/(1/2)) = (b/√2/2)
14 = 2b/√2
14√2 = 2b
7√2 = b
Konsep
Panjang AB = c, BC = a dan AC = b
Diketahui segitiga ABC dengan sisi BC=7cm, <A= 30° dan <c = 105° panjang sisi AC adalah…
(a/sin a) = (b/sin b)
(7/sin 30) = (b/sin 45)
(7/(1/2)) = (b/√2/2)
14 = 2b/√2
14√2 = 2b
7√2 = b
Konsep
Panjang AB = c, BC = a dan AC = b