" (vi) "2tan^(-1)((1)/(3))=tan^(-1)((3)/(4))

Prove that 2tan^(-1)((1)/(2))=tan^(-1)((4)/(3))

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

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

"tan"^(-1)((1)/(3))+ "tan"^(-1)((2)/(9)) + tan^(-1)((4)/(3^(3))) + ....oo is equal to

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

Show that ,,tan^(-1)(1)/(2)+tan^(-1)(2)/(11)=tan^(-1)(3)/(4)

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

Prove that tan^(-1)""(1)/(2)+tan^(-1)""(2)/(11)=tan^(-1)""(3)/(4)

2 tan ^(-1) ""(1)/(2) = tan^(-1) ""(4) /(3)