I can not do this question, please help. For any triangle ABC, prove that c^2=(a+b)^2[1-k^2cos(1/2)C].
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Expert's answer
2010-06-07T07:06:43-0400
Try to use the sinus and cosinus theorems for proof. If you want more detailed answer just submit your assignment to our site and our experts will help you.
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