`tan(tan^-1(3/4)+tan^-1(1/2))=?`

Prove that : tan^(-1)(1/2) + tan^(-1)(1/3) = tan^(-1)(3/5) + tan^(-1)(1/4) = pi/4

If: tan^(-1)(1/3) + tan^(-1)( 3/4) - tan^(-1)(x/3) =0 , then: x=

PT tan^(-1)(3/4)+tan^(-1)(1/3)=tan^(-1)(13/9)

tan^-1 (1/2) + tan^-1 (1/3) = π/4

Show that: tan^-1 1 +tan^-1 2+tan^-1 3=2(tan^-1 1+tan^-1 (1/2)+tan^-1 (1/3))

Prove that : tan^(-1) 1 + tan^(-1) 2 + tan^(-1) 3= pi = 2(tan^(-1) 1 + tan^(-1)((1)/(2)) + tan^(-1)( (1)/(3)))

tan^(-1)(1)/(4)+tan^(-1)(2)/(9)=tan^(-1)(1)/(2)

tan^(-1)3 + tan^(-1)4=

tan^(-1)1+tan^(-1)2+tan^(-1)3=