Show the following trigonometric identity: tan 4x = 4 tan x - 4 tan^3 x/1 - 6 tan^2 x + tan^4 x steps: a) Create an array of length 100, between [0, 2*pi] b) Create two arrays for left hand side and right hand side of the identity c) Show the difference is zero (use sum, and abs function of matlab)