Answer:
tan a + cot b
Step-by-step explanation:
It's already simplified.
There are alternate forms like
[tex]sec(a)csc(b)cos(a-b)\\\\sec(a)csc(b)[sin(a)sin(b)+cos(a)cos(b)]\\\\\frac{sin (a)}{cos (a)} +\frac{cos(b)}{sin(b)}[/tex]
