Give the method header for each of the following methods:

a) Method Hypotenuse, which takes two double-precision, floating-point arguments side1 and side2 and returns a double-precision, floating-point result.

b) Method Smallest, which takes three integers x, y and z and returns an integer.

c) Method Instructions, which does not take any arguments and does not return a value.

d) Method Into Double, which takes integer argument number and returns a double value.