Correct answer is: actual wingspan of airplane is 6 inches.
Solution:-
We are given that wingspan is 'a' feet and tail span is 'b' feet in a scale drawing.
And we are also given that tail span is 2 inches that is b=2 inches and 
Let us plugin the b value in above equation.

Multiplying with 2 on both sides.
a=3X2=6 inches.
Hence actual wingspan of airplane is 6 inches.
Consider the expression 
This expression contains two terms with
group them:

Now simplify term 
Now 
This expression is defined for all x.
Answer:
I, personally, would assume A, or 80°
Step-by-step explanation: