Answer:
4.21, 4.22, 4.23,
4.24 (choose any one)
Step-by-step explanation:
since 4 1/5 is 4.20, so the numbers in between 4.20 and 4.25 are 4.21, 4.22, 4.23,
C
option 2
452.16
sin(π/8) = (1/2)√(2-√2)
Using the half-angle formula ...
We can let θ = π/4 and simplify the result as follows: