SOLUTION: if sin theta 1 +sin theta 2 + sin theta 3= 3 then find cos theta 1 +cos theta 2 + cos theta 3...????

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Question 875008: if sin theta 1 +sin theta 2 + sin theta 3= 3
then find cos theta 1 +cos theta 2 + cos theta 3...????
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Zero -- since , the only solutions to occur when . By the Pythagorean identity , we have .