1. ## Cot(x)

Hi,

I need to determine the value of cot(x) at pi/2... but cot(x) is equal to 1/tan(x) and at tan(pi/2) the function is undefined?

I'm confused, can anyone explain how determine the value of cot(pi/2)... Thanks

2. ## Re: Cot(x)

Originally Posted by sjmiller
Hi,

I need to determine the value of cot(x) at pi/2... but cot(x) is equal to 1/tan(x) and at tan(pi/2) the function is undefined?

I'm confused, can anyone explain how determine the value of cot(pi/2)... Thanks
$\cot\left(\frac{\pi}{2}\right) = \frac{\cos\left(\frac{\pi}{2}\right)}{\sin \left(\frac{\pi}{2}\right)} = \frac{0}{1} = 0$