Consider the diagram. From SOH CAH TOA, you know that
sin(65°) = (12.5 ft)/x
x = (12.5 ft)/sin(65°)
x ≈ 13.8 ft
The answer is 3! I hope this helps. I used a calculator to get the answer.
Answer:
Step-by-step explanation:
Given
7.2, a, b, 3 are in A.P


as
a, b, 3 are also in A.P

Putting 










Now, plugging
in 




Therefore,