Answer:
No.
Step-by-step explanation:
No, Bob is not correct.
The formula he's using is the following:

The important thing here is that the angle is between the two sides.
In the given triangle, 120 is not between 8 and 18. Therefore, using this formula will not be valid.
Either Bob needs to find the other side first or find the angle between 8 and 18.
Answer:
Oke..check the equations..cheeeckk did it now what?
Answer:
7/3
Step-by-step explanation:
To find an improper fraction, multiply the denominator and whole number to get 6, then add the numerator to 6 to get 7. Put the denominator over 7 to get 7/3.