Identify the value that is equivalent to cos 27°.
a
sin 27°

b
sin 63°

c
cos 63°

d
cos 153°

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.