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Prove that sina+cosa/sina-cosa+sina-cosa/sina+cosa=2/1-2cos^2a
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sina+cosa/sina-cosa+sina-cosa/sina+cosa=2/1-2cos^2a
(sinA+cosA) % (sinA-cosA) + (sinA-cosA) % (sinA+cosA) = 2 % (1-2cos2A)
prove sina +cosa/sina-cosa +sina-cosa/sina+cosa=2/1-2cos2a
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2/sin2a-cos2a=2/2sin2a-1=2/1-2cos2a
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2 sec^2a/tan^2a-1
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2/sin2a-1
cota+coseca-1/cota-coseca+1=1+cosa/sina
prove that sina/cota+coseca=2+sina/cota-coseca
sina+cosa/sina-cosa+sina-cosa/sina+cosa=1/sin2a-cos2a
cosa+sina/cosa-sina-cosa-sina/cosa+sina=2tan2a
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2sin2a-cos2a
(sinA+cosA) % (sinA-cosA) + (sinA-cosA) % (sinA+cosA) = 2 % (1-2cos2A)
prove sina +cosa/sina-cosa +sina-cosa/sina+cosa=2/1-2cos2a
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2/sin2a-cos2a=2/2sin2a-1=2/1-2cos2a
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2 sec^2a/tan^2a-1
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2/sin2a-1
cota+coseca-1/cota-coseca+1=1+cosa/sina
prove that sina/cota+coseca=2+sina/cota-coseca
sina+cosa/sina-cosa+sina-cosa/sina+cosa=1/sin2a-cos2a
cosa+sina/cosa-sina-cosa-sina/cosa+sina=2tan2a
sina+cosa/sina-cosa+sina-cosa/sina+cosa=2sin2a-cos2a
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Prove that sina+cosa/sina-cosa+sina-cosa/sina+cosa=2/1-2cos^2a
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