1.

If sin h^(-1) 2 alpha= 2 coh h^(-1) beta then

Answer»

`ALPHA^(2)+beta^(2)=alpha^(4)`
`alpha^(2)+beta^(2)=4`
`alpha^(2)+beta^(2)=beta^(4)`
`alpha^(2)=beta^(2)`

Answer :C


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