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Trignometry

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18 Mar 2010 20:24:33 IST

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coshx+sinhx=1-tanhx/1+tanhx plz derive this i have been trying 4m ages

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coshx+sinhx=1-tanhx/1+tanhx plz derive this i have been trying 4m ages

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Nehal Wani

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Joined: 19 Jul 2009

Posts: 166

19 Mar 2010 07:11:02 IST

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For h=π/6, and x=1,

coshx+sinhx=(√3+1)/2

where as (1-tanhx)/(1+tanhx)= (√3-1)²/2

Therefore the identity is wrong!

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