We need the picture or is it just the question?
check the picture below.
make sure your calculator is in Degree mode.
The answer would be 2√5/5
As a rule, you cannot have any radical as a denominator. That's why you gotta multiply √5 with √5 which would be √25. The square root of this is 5, and now you have disposed of the radical! Hurray. However, keep in mind, that when you multiply √5, you also multiply it to the numerator. So, yeah, after this, you get the answer.
Hopefully, my explanation makes sense. :)
Answer: if your looking for an answer it’s c= 12.57
Step-by-step explanation: