quick help with arccot problem

Hi, I have a problem I dont remember how to solve, or how to enter in calculator... :(

csc(arccot 3)

and

tan(arcsec 0)

it says find exact value of the expression using radicals or pi if necessary

1) You must draw a Right Traingle.

2) Label an acute angle.

3) Label two sides so the angle has the value inside the parentheses.

For example, arccot(3) -- Label the adjacent side '3' and the opposite side '1'.

4) Use the pythagorean theorem to calculate the corresponding value of the third side.

5) The final value should be obvious.