Answer:
Step-by-step explanation:
45=32+13
tan 45=tan(32+13)
[tex]1=\frac{tan~ 32+tan~ 13}{1-tan ~32 ~tan~ 13} \\cross~multiply \\1-tan 32 ~tan~13=tan ~32+tan~13\\[/tex]
or 1-tan 32 tan 13-tan 32-tan 13=0
