Final answer:
To solve the student's question, we must list the knowns, identify the equation with one unknown, rearrange to solve for 'x', and check the reasonableness of the answer.
Step-by-step explanation:
To solve the student's problem, the first step is to list the knowns that have been provided. We must also infer any necessary information that can be derived from what is given.
The second step is to identify the appropriate equation. This involves considering the variables we have and what we need to find. It's best to use an equation with only one unknown, which in this case is 'x'. The equation chosen should allow for solving 'x' without a need for additional data.
In the third step, we must rearrange the equation to isolate 'x' and solve for it. If necessary, ensure that all values are in the same units, often radians for angles.
Once 'x' is found, the fourth step is to substitute back into any relevant equations to find the values of RS and RT and check these results for reasonableness to ensure that they make sense within the context of the problem.