Mathematics Resources for Class 11
Wednesday, September 18, 2013
Wednesday, September 11, 2013
Monday, September 9, 2013
Sunday, September 8, 2013
Prove that 2 Cos (Pi/13). Cos (9Pi/13) + Cos (5Pi/13) + Cos (3Pi/13)= 0
Prove that 2 Cos
(Pi/13). Cos (9Pi/13) + Cos (5Pi/13) + Cos (3Pi/13)= 0
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