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" Prove "2tan^(-1)((1)/(2))+tan^(-1)((1)...

" Prove "2tan^(-1)((1)/(2))+tan^(-1)((1)/(7))=tan^(-1)((31)/(17))

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

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

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

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

Prove that 2tan^(-1)((1)/(2))+tan^(-1)((1)/(7))=sin^(-1)((31)/(25sqrt(2)))

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

Prove that tan^(-1)((1)/(7))+tan^(-1)((1)/(13))=tan^(-1)((2)/(9))

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

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

Prove that tan^(-1)((1)/(7))+tan^(-1)((1)/(13))=tan^(=-1)((2)/(9))