
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the function $f(x)=\sin (2x+ \frac {π}{3})+ \tan \frac {5π}{6} \cdot \cos 2x$.
(I) Find the smallest positive period of $f(x)$ and the equation of the symmetry axis of its graph;
(II) Find the range of the function $f(x)$ on the interval $(0, \frac {π}{2})$.

Present the answer in LaTex format: \boxed{Your answer}
user