Final answer:
The given references do not clearly indicate a question or equation to solve for a variable x. The options presented are angle measurements, and without more context, it's impossible to definitively provide the value for x. For accurate assistance, additional information or a specific problem statement is needed.
Step-by-step explanation:
To find the value for x, we must first locate the question this student is referring to from the given references. However, there seems to be a misunderstanding as the provided references do not directly point to a clear mathematical problem that can be solved for a variable x. Instead, these references appear to be individual angle measurements and calculations from different problems, possibly related to physics (angle calculations) or trigonometry.
The options provided by the student: (a) 35°, (b) 45°, (c) 55°, (d) 65°, are angle measurements, and without additional context it's impossible to determine a specific value for x. If these options are meant to be answers to a particular problem, we would need the actual problem statement to correctly identify which one is the solution for the unknown x.
If the student has a specific question with an equation or a scenario where these angles are used, please provide it, and I'd be happy to assist with solving for x.