Did you leave out any part of the problem?
Answer:
and 
Step-by-step explanation:
sinB =
=
= 
tanC =
=
= 
Thus
sinB tanC =
×
( cancel b on numerator/ denominator )
= 
---------------------------------------------------------------------------
sinC =
=
= 
tanB =
=
= 
Thus
sinC tanB =
×
( cancel c on numerator/ denominator )
= 
<h3><u>MEAN</u></h3>
Mean is the average. To find the mean of a data set, you have to add all the numbers and divide the sum by the amount of numbers you added.
<em>In this equation, you have 8 numbers. That means you will be dividing by 8. </em>
The first thing you need to do is add all the numbers. Add:

Now that you have added all the numbers and got the sum, divide by 8. Remember that you will be dividing by 8 since you added 8 numbers.
Divide:

The mean is 66
<em>If you have any questions, feel free to ask in the comments! :)</em>
I am pretty sure it is 3520 feet per minute.