[A+B=300^(@)rArr(1+sqrt(3)cot A)(1+sqrt(3)cot13)],[1.4]

A+B=300^(@)rArr(1+sqrt(3)cot A)(1+sqrt(3)cot B)=

cot^(-1)(-sqrt(3))

Cot^(-1)(-sqrt(3))

cot^(-1)(2+sqrt(3))=

cot(tan^(-1)sqrt(3))

cot(tan^(-1)sqrt(3))

tan^(-1)(sqrt3)-cot^(-1)(-sqrt3)

Solve sqrt(sqrt(3)cot theta)<1

cosec^(-1)(-sqrt(2))+cot^(-1)(sqrt(3))=

Sum of series of ^(cot^(-1)(5)/(sqrt(3))+cot^(-1)(9)/(sqrt(3))+cot^(-1)(15)/(sqrt(3))+cot^(-1)(23)/(sqrt(3))+......oo) is equal to