Answer:
c
Step-by-step explanation:
Given that:
since cos (kπ) =
Then, the series can be expressed as:
In the sum of an alternating series, the best bound on the remainder for the approximation is related to its term.
∴
D
57.6
2 and 1/5 is greater than 2.15
This is true because 1/5 is equal to .20 which is greater than .15
2 and 7 are the prime numbers.