" 27.27.If "tan^(-1)3+tan^(-1)x=tan^(-1)8," then "x=

If tan^(-1)x+tan^(-1)(1-x)=tan^(-1)(4/3) then x=

If tan^(-1)3+tan^(-1)x=tan^(-1)8 , then x= (a) 5 (b) 1//5 (c) 5//14 (d) 14//5

If tan^(-1)3+tan^(-1)x=tan^(-1)8 , then x= (a) 5 (b) 1//5 (c) 5//14 (d) 14//5

If tan^(-1)(x+1)+tan^(-1)(x-1)="tan"^(-1)8/31 then x=

If tan^(-1)(x-1)+tan^(-1)x+tan^(-1)(x+1)=tan^(-1)3x , then x =

If tan^(-1)(x+1)+ tan^(-1)(x-1)= tan^(-1)(8/31) ,then x is equal to

tan ^(-1) (1/3)+tan ^(-1) (1/5)+tan ^(-1) (1/7)=tan ^(-1) x, then x=

Let |{:(tan^(-1)x, tan^(-1)2x, tan^(-1)3x), (tan^(-1)3x, tan^(-1)x, tan^(-1)2x), (tan^(-1)2x, tan^(-1)3x, tan^(-1)x):}|=0 , then the number of values of x satisfying the equation is