Answer:
Step-by-step explanation:
Sum of interior angles in a triangle is 180degree.
<B + 15degree + 45degree = 180degree
<B = 180 - 45 - 15 = 120 degree
By sine rule,
sin<B / AC = sin<C / AB = sin <A / BC
sin120degree / 200 = sin15degree / AB = sin45degree / BC
AB = 200*sin15degree/sin120degree
= 59.77
BC = 200*sin45degree/sin120degree
= 163.30
