Match the statements/expressions given i...

Match the statements/expressions given in Column I with the values given in Column II. Column I, Column II `sum_(i=1)^ootan^(-1)(1/(2i^2))=1,t h e ntant=` , Sides `a , b , c` for a triangle ABC are in A.P. and `costheta_1=a/(b+c),` `costheta_2=b/(a+c),` `costheta_3=c/(a+b),` then `tan^(2)((theta_1)/2)+tan^2((theta_3)/2)=` , 1 A line is perpendicular to `x+2y+2z=0` and passes through (0,10). The perpendicular distance of this line from the origin is , `(sqrt(5))/3`

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