Arccos in Field Calculator

JanTichy

Hi, I need to calculate this formula in Field Calculator. Should be pretty easy, but I´ve never worked in Python. So I will be very grateful if someone could me write the input. Thanks a lot! Jan

arccos ( ([Field_A]^2 + [Field_B]^2 - [Field_C]^2) / (2*[Field_A]*[Field_B]) )

 

  

DanPatterson_Retired

math<SPAN class="punctuation token">.</SPAN>acos<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>!Field_A!<SPAN class="operator token">**</SPAN><SPAN class="number token">2</SPAN> <SPAN class="operator token">+</SPAN> !Field_B!<SPAN class="operator token">**</SPAN><SPAN class="number token">2</SPAN> <SPAN class="operator token">-</SPAN> !Field_C!<SPAN class="operator token">**</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">/</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="number token">2.0</SPAN> <SPAN class="operator token">*</SPAN> !Field_A! <SPAN class="operator token">*</SPAN> !Field_B!<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>

<SPAN class="comment token"># --- python parser... I think 'math' is builtin to the field calculator</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>