Final answer:
The question does not provide enough information to solve for the length of side BX in triangle ABC. Additional data such as another angle or side is required to determine the length of y using trigonometry.
Step-by-step explanation:
The problem provided involves a triangle with sides AB, AC, and an unknown side BX represented as y centimeters. However, there is a lack of sufficient information provided to determine the length of side BX based on the given data of the other sides and the angle at A. Normally, a situation like this calls for the use of the Law of Sines or the Law of Cosines to solve for the missing side when two sides and a non-included angle or two angles and a side are known, respectively.
Without the measure of the angle at B or C, or information on whether triangle ABC is a right triangle, we cannot apply trigonometric rules directly to find the length of side BX. We need additional information such as the angle at vertex B or C, or another side length or relationship.