<?xml version="1.0" encoding="UTF-8"?><out>
      ArcCos value of zero is:
      1.5707963267948966<br/>
      ArcCos value of nzero is:
      1.5707963267948966<br/>
      ArcCos value of num1 is:
      NaN<br/>
      ArcCos value of num2 is:
      NaN<br/>
      ArcCos value of temp1 is:
      NaN<br/>
      ArcCos value of temp2 is:
      NaN<br/>
      ArcCos value of rad1 is:
      0<br/>
      ArcCos value of rad2 is:
      NaN<br/>
      ArcCos value of rad3 is:
      1.3150164396623272<br/>
      ArcCos value of rad4 is:
      2.663773756337589<br/>
      ArcCos value of input1 number is:
      NaN<br/>
      ArcCos value of input2 number is:
      NaN<br/>
      ArcCos value of input3 number is:
      NaN</out>