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tan^(-1)(1/7)+tan^(-1)(4/7)+tan^(-1)(9/7...

`tan^(-1)(1/7)+tan^(-1)(4/7)+tan^(-1)(9/7)=.........`

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tan^(-1)(1/7)+tan^(-1)(1/9)+tan^(-1)(1/8)

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

If S=tan^(-1)(1/3)+tan^(-1)(1/7)+tan^(-1)(1/13)+.... to 10 terms. Find tanS

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

Find x if tan^(-1)(x) = tan^(-1)(1/2) + tan^(-1)(3/7)

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)

tan^(-1)3-tan^(-1)2=tan^(-1)(1/7)

tan^(-1)3-tan^(-1)2=tan^(-1)(1/7)

tan^(-1) (1/5) + tan^(-1) (1/7) + tan^(-1) (1/3) + tan^(-1) (1/8) = π/4