Answer:

Step-by-step explanation:
Given the logarithm function

For logarithmic equations,
is equivalent to
such that
and 
In current case:



Substituting the values of
and
into the equation 

Answer:
105 miles
Step-by-step explanation:
In trigonometry, to solve right triangles, we use sine, cosine, and tangent (their definitions, and the laws of sine and cosine) to help us fill in the blanks. Do you need more information (I'm rusty on law of sines and law of cosines, but pretty fresh on definitions and identities).
Answer:
See the attached document