Help! A "C" program that calculates the input number using sin, cos, tan, cot, sec, csc, log & nl..?

Help i really need a simple and clear program that works and calculates the sin, cos, tan, sec, cot, csc, log, and nl values of an input number in "double" decimal.. Im having a hard time making the program or I get "0.0000" and "-0.0000" as the answer in sin, cos, and tan values. Is there anyone there kind enough to help me?? thanks in advance..