Final answer:
Currently, the question cannot be answered due to lack of context and information relating to what 'Acellus' refers to or the mathematical relationship between 'Acellus' at 87° and the value of x.
Step-by-step explanation:
The question requires us to find the value of x given that 'Acellus' is at 87°. Unfortunately, there is not enough context to determine what 'Acellus' refers to, and the provided options for x (330, 243, 173, 263) do not seem to be directly related to any commonly known mathematical relationship involving angles that would result in 87°. However, the provided information seems to pertain to a range of other problems, suggesting that this question may be part of a larger set of challenging problems, perhaps a chemistry or physics problem set, but it is not clear how they relate to the value of 'Acellus' at 87°.
As there is no evident mathematical operation that links the value of 87° to any of the provided options for x, and since we do not have a valid equation or context, it is not possible to confidently solve for x in relation to the given angle.
If the student can provide additional clarification on what 'Acellus' refers to or the context in which this problem has been given, a more accurate and appropriate response could be formulated. Without this, the question cannot be answered correctly based on the information provided.