Thread: identity problem
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Old November 1st, 2009, 05:00 PM
umgambit umgambit is offline
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Well,
secēA+cosAsecA+cosēA=1/cosē+1+cosēA=(cosē+sinē)/cosē+1+cosēA=1+sinē/cosē+1+cosēA=2+tanēA+cosēA.
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