Enter T between 0 and PI/2
 Enter T between 0 and PI/2
 Enter T between 0 and PI/2
 Enter T between 0 and PI/2
 Enter T between 0 and PI/2
 T, Calculated answer, True answer
   0.100000  0.316236  0.316228
   0.500000  0.707133  0.707107
   1.000000  1.000044  1.000000
   1.500000  1.224805  1.224745