Using the triangle on the right, find:    

1. $\sin A$ 

   Hint(a):

   Remember that $\sin(x)$ is opposite over hypotenuse.

   Answer(a):

   $\sin \left(A\right)\ =\ \frac{a}{c}$

2. $\sec A$ 

   Hint (b):

   How is $\sec(x)$ related to $\cos(x)?$

3. $\csc B$ 

   Hint (c):

   Which trigonometric ratio is $\csc(x)$ related to? How is it related?

4. $\tan B$ 

   Hint (d):

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