The cotangent value of  .0001  is 10000. 
*** TEST #1 PASSED ***
The cotangent value of  .5  is 1.83049 
*** TEST #2 PASSED ***
The cotangent value of -.5  is-1.83049 
*** TEST #3 PASSED ***
The cotangent value of  1  is .642093 
*** TEST #4 PASSED ***
The cotangent value of -1  is-.642093 
*** TEST #5 PASSED ***
*** ALL TESTS PASSED ***
