Using the triangle at right, find: 

1. $\sec B$ 

   Hint (a):

   What trigonometric ratio is sec$(x)$ a reciprocal of?
   What parts of the triangle are used in that ratio?

2. $\tan A$ 

   Hint (b):

   Remember that tan$(x)$ is equal to opposite over adjacent.

   Answer (b):

   $\frac{a}{b}$

3. $\cot A$ 

   Hint (c):

   This is related to part (b). How?

4. $\csc A$ 

   Hint (d):

   What trigonometric ratio is csc$(x)$ a reciprocal of?

   Answer (d):

   $\frac{c}{a}$