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જો tan^-1 a+tan^-1 b=sin^-1 1-tan^-1 c ત...

જો `tan^-1 a+tan^-1 b=sin^-1 1-tan^-1 c` તો _________

A

`a+b+c=abc`

B

`ab+bc+ca=abc`

C

`1/a+1/b+1/c=1/(abc)`

D

`ab+bc+ca=a+b+c`

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