Suppose that triangle ABC is a right triangle with a right angle at $C$ and hypotenuse $c$. Also note that $a$ is the length of the side opposite angle $A$ and $b$ is the length of the side opposite angle $B$.

Given that $a$ = 7 and $b$ = 18, determine the values indicated below.
Give answers in exact form. Do NOT use decimals. Type 'sqrt' if you need to use square root.

$\sin ( A )$ =

$\cos ( A )$ =

$\tan ( A )$ =

$\sin ( B )$ =

$\cos ( B )$ =

$\tan ( B )$ =