Question

B треугольник Abc угол C = 98,  угол  A = 60, AC = 4см  Найти BC и AB

Answer 1

<B = 180 - 98 - 60 = 22
AC/sin 22 = BC/sin 60=AB/sin98
BC = AC*sin60/sin22=4*0,866/0,375=9,2
AB = AC*sin98/sin22=4*0,99/0,375=10,6