Distances

If you are struggling, look at varying the value of . What is this showing? How will this help you solve the problem? Consider the point , and the vector or , how is this useful in solving the problem.

Explain your step by step method for solving this kind of problem. A similar approach will be needed for subsequent questions.

When altering , what is the purpose of this, and what does this show you in terms of finding a solution?

If you were to change the distance required in this question, what limitations would there be on the possible values of such that this would have a solution? Does this tell us anything useful? (This should answer should link into the next problem)

Explain your step by step method for solving this kind of problem.