Which of the following are equal to 60 degrees?
-300 degrees
Pi/6 radians
Pi/3 radians
Pi - 2/3
5/3 pi radians
1.047 radians

Since 180 degrees are the same as radians, we have the following proportion:

Since your angle, in degrees, is 60, we have

Solving for the angle in radians, we have

Simplify this fraction and you'll get the answer.

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

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