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Show that tan^(-1) (1/2) +tan^(-1) (1/...

Show that
`tan^(-1) (1/2) +tan^(-1) (1/8) = tan^(-1) (3/4) - tan^(-1)(1/18)`

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Evaluate 2tan^(-1)(1/2)+tan^(-1)(1/4)

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

Prove that : tan^(-1)(1/5)+tan^(-1)(1/7)+tan^(-1)(1/3)+tan^(-1)(1/8)=pi/4

Prove that: tan^(-1)(1/5)+tan^(-1)(1/7)+tan^(-1)(1/3)+tan^(-1)(1/8)=pi/4

tan^(- 1)(1/4)+tan^(- 1)(2/9)=1/2tan^(- 1)(4/3)

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