सिद्ध कीजिए कि    `"cot"^(-1)(ab+1)/(a-b)+"cot"^(-1)(bc+1)/(b-c)+"cot"^(-1)(ca+1)/(c-a)=0`
Channel: Doubtnut
Date: 2020-02-20

सिद्ध कीजिए कि  "cot"^(-1)(ab+1)/(a-b)+"cot"^(-1)(bc+1)/(b-c)+"cot"^(-1)(ca+1)/(c-a)=0`