Prove that, tan 85°-tan 5°=2 tan 80°
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according to formula
TanA- Tan B = Tan( A-B/1+A*B)
Here 85 degree is equal to 17pi/36
5 degree equal to 5pi/180
TanA- Tan B = Tan( A-B/1+A*B)
Here 85 degree is equal to 17pi/36
5 degree equal to 5pi/180
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