- #1

Qube

Gold Member

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## Homework Statement

http://i.minus.com/iCJwlfzPc5fRu.png [Broken]

## Homework Equations

This feels like a movie requiring the suspension of disbelief.

## The Attempt at a Solution

cot(x) = cos(x)/sin(x).

cot(0) = 1/0

Right? How in the world then is 0cot(0) - 1 = 0? That should be infinity minus 1.

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