The value of cos(x) is evaluated as follows: cos(x)=1- x^2/2!+ x^4/4!- x^6/6!+ x^8/8!++ x^2n/((2n)!) Where n is related to the accuracy level required for cos(x). Write a C++ program that asks the user to input n and x and then the program will evaluate cos(x) up to the 2n terms.