For the triangle at right, write each of the following trigonometric ratios. The first one is done for you.

1. tan $C=\frac{AB}{BC}$

2. sin $C$

3. tan $A$

4. cos $C$

   Answer (d):

   $\cos{C}=\frac{BC}{AC}$

5. cos $A$

6. sin $A$

   Answer (f):

   $\sin{A}=\frac{BC}{AC}$