Find the Following Exactly Using the Figure Given If $a=3$ And $c=7$

Essay

Find the following exactly using the figure given if $a=3$ and $c=7$ . Express your answers as unsimplified radicals when appropriate.
A) $\sin A^{\circ}$
B) $\cos A^{\circ}$
C) $\tan A^{\circ}$
D) $\sin B^{\circ}$
E) $\cos B^{\circ}$
F) $\tan B^{\circ}$