Explanation:
The specific property used here is the property of logarithms that allows you to equate the contents of logarithms when they have the same base, resulting in an equation between the arguments inside the logarithms. Additionally, trigonometric identities (such as the one involving ArcTan) are used to simplify expressions involving trigonometric functions. The final steps would depend on the specific context and goals of the problem you're trying to solve.
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