<p>This is roughly the question, according to my friend.</p>
<p>There's a triangle ABC. The length of AC is 6. The length of BC is 3. Point P is somewhere between AB so that line CP is perpendicular to AB. What's the length of CP?</p>
<p>The answer is 2 - but I'm not sure how to arrive there. Any helps would be greatly appreciated. =)</p>
<p>The problem cannot be solved from the information given. You need the length of AB or the measure of an angle.</p>
<p>I agree with Mrs Ferguson, but if it was a MC and the ques asked "which of the following is a possible value of CP?" and the other 4 choices were 3 or larger then you can conclude that the answer is "2".</p>
<p>I remember such a question in "10 Real SATs", but don't know if that's the one you are asking.</p>
<p>if it was stated that it is a right triangle or if one angle was given, I think the problem would be solvable.</p>