I think it is that I did some math and that was my end result if I did it right and read the question correctly
Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
we know that
In the right triangle ABC of the figure, the tangent of angle C is equal to divide the opposite side to angle C (side AB) by the adjacent side to angle C (side BC)
so

substitute the given values

simplify

Answer:
It's a property of log() or ln() functions. It's states:

in other word, subtraction of log functions could be combined to a quotient in the log function.
Hey there!
The answer to your question is 
Given:

First, we can start by adding like terms. The following are like terms:



Now, we can add these pairs together, giving us:



Now, add all this together, and we get our answer as:

Have a terrificly amazing day!