Answer:
See the proof below.
Step-by-step explanation:
For this case we need to proof the following identity:

So we need to begin with the definition of tan, we know that
and we have this:
(1)
We also have the following identities:


And if we apply those identities into equation (1) we got:
(2)
We can divide numerator and denominator from expression (2) by
like this:

And if we simplity we got:

And with that we complete the proof. And that appies for all 
119.833333333 times it goes into 719 119.833333333 times
Answer:
the answer is A) -17
all you need to do is divide 8.5 ÷ -.5 to get -17