3. Fortran has a vast array of built in mathematical functions. Some are sqrt for the square root function, exp for the e to a power function, sin, cos, tan, inverse trig functions acos,asin, atan hyperbolic functions cosh, sinh, and so on. These all expect to recieve a floating point input. Write a program with a loop that starts with 'do i 0,5' which will print on each line cos(i),exp(i) and atan(i). Note you will have to cast the integer values to floating point, such as 'cos( float(i))'. Check with a calculator that the values are correct. This looks to be useless busy work. It isn't. This is an early forshadowing of certain calculations we will see in polynomial interpolation, numerical integra- tion and numerical solution of differential equations. I Think I'll have a question such as this, easy and related to things to come on each homework set