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STATEMENT -1 : The value of tan^(-1)x+ta...

STATEMENT -1 : The value of `tan^(-1)x+tan^(-1)(1/x)=pi/2, AA x in R -{0}`. and STATEMENT -2 : The value of `tan^(-1).(1/x)={:{(cot^(-1)x,x gt0),(-pi+cot^(-1)x,x lt0):}`

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