Question

How do you find the value of `cot 0`?

Answer 1

`cot0` doesn't exist; the cotangent doesn't exist for values of `x=npi.`

Explanation:

Recall that `cotx=cosx/sinx.` Then,

`cot0=cos0/sin0`.

`cos0=1, sin0=0,`

so

`cot0=1/0` doesn't exist (division by zero). This gives rise to the fact that `cotx` doesn't exist for `x=npi.`