16m^4+20m^2-20m^2-25
Answer: 16m^4-25
Cos60° = 0.5
Any angle less than 90° is an acute angle.
Therefore, 60° is the acute angle.
Using the recursion equation, it is found that the value of the 2nd iterate is:

<h3>What is the recursive equation?</h3>
The value of the nth iteration is given by:

The initial estimate is:

Hence, the 1st iterate is given by:

The 2nd iterate is:

Thus, the fourth option is correct.
You can learn more about recursive equations at brainly.com/question/6561461
Answer:
2
Step-by-step explanation: