Answer:
the first one im pretty sure
Step-by-step explanation:
Answer: 1, 7, 1, 7, 1.
Step-by-step explanation:
The given function :
and f(1) = 1 for n ≥ 1
We put value of n=1,2,3,4 , we get
For n=1 , 
For n=2 , 
For n=3 , 
For n=4 , 
Hence, the first five terms of the given sequence are 1, 7, 1, 7, 1.
Answer:
x=45
Step-by-step explanation:
Cos60° = 0.5
Any angle less than 90° is an acute angle.
Therefore, 60° is the acute angle.