Friday, January 18, 2002

2002 #18 and 24

Permutations with a twist. Let's go do the twist. And ARCLength!

 Difficulty: medium.

Difficulty: Are they paying attention?  It's a lead-pipe cinch that most will get the degrees of arc and forget to RTFQ.

Standard instructions for this series: No calculator allowed. Express  answers in reduced form. Rationalize denominators. Radicals must be  reduced. All numbers are base ten unless otherwise specified. Do not approximate radicals or π. Leave such answers as 1025π or √39, for example. Source: UVM Math Contest

answer 18 and answer 24.

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