physics chemistry maths science forums become expert I help I sign up I login refer a friend - earn nickels!!     advanced   Home Ask & Discuss Questions Study Material Experts Zone Hang Out! yoganda's has created 1 topics in the forums:  Question   Answers   Views   Last message   Forum Name  given:a+b+c=180;tan{(a+b-c)/4}tan{(b+c-a)/4}tan{(a+c-b)/4}=1RTP-1+cosa+cosb+cosc= 7 2894 1 Jul 2008 12:19:24 IST harimanjunath Trignometry

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