
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 that the function $f(x)=\sin (ωx+φ)(ω > 0,0 < φ < π)$ has a distance of $\frac {π}{2}$ between adjacent symmetry axes, and the function $y=f(x+ \frac {π}{2})$ is an even function.
1. Find the analytical expression of $f(x)$.
2. If $α$ is an acute angle, and $f(\frac {α}{2}+ \frac {π}{12})= \frac {3}{5}$, find the value of $\sin 2α$.

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