Answer:
Step-by-step explanation:
Each term in the sequence is 4 less than the previous term. That indicates an arithmetic sequence, which has the form a(n) = a(1) + d(n -1), where d is the common difference. Here the common difference is -4, and so the appropriate sequence is
a(n) = 14 - 4(n - 1)
35.9 ft
The mnemonic SOH CAH TOA reminds you that ...
Tan = Opposite/Adjacent
tan(U) = VW/WU
tan(65°) = (77 ft)/WU
WU = 77 ft/tan(65°) ≈ 35.9 ft