
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 $\sin \theta + \cos \theta = \frac{4}{3}$, with $\theta \in \left(0, \frac{\pi}{4}\right)$, find the value of $\sin \theta - \cos \theta$.  
Options:  
A) $\frac{\sqrt{2}}{3}$  
B) $-\frac{\sqrt{2}}{3}$  
C) $\frac{1}{3}$  
D) $-\frac{1}{3}$

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