Part 1: Similarities of sine and cosine graphs are that both has an amplitude of 1 and a period of 2pi.
A differences between sin and cos graphs includes that sin graph passes through point (0, 0).
The required cosine graph is <span>f(x) = 3 cos(4x - 3π/2) + 4</span>
The estimated amount would be 5.50 or 6 depending on what your estimating by and the actual answer would be 5.45. I hope this helped :)
