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(12)" Show thal "2tan'(1)/(5)+tan^(-1)(1...

(12)" Show thal "2tan'(1)/(5)+tan^(-1)(1)/(4)=tan^(2)(32)/(43)

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

Prove that 2tan^(-1)""(1)/(5)+tan^(-1)""(1)/(4)=tan^(-1)""(32)/(43)

Show that 2tan^(-1)(1/2) + tan^(-1)(1/7) = tan^(-1)(31/17)

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Prove that : 2 tan^-1(1/5) + tan^-1(1/4) = tan^-1(32/43)

2tan^(-1)((1)/(5))+tan^(-1)((1)/(8))= tan^(-1)((4)/(7))

2tan^(- 1)\ 1/5+tan^(- 1)\ 1/4=tan^(- 1)\ 32/43