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" 7."tan^(-1)(1)/(7)+tan^(-1)(1)/(8)=tan...

" 7."tan^(-1)(1)/(7)+tan^(-1)(1)/(8)=tan^(-1)(3)/(11)

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

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) .

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

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

Solve: tan^(-1)((1)/(2))+tan^(-1)((1)/(3))+tan^(-1)((3)/(5))+tan^(-1)((1)/(7))

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

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

The value of "tan"^(-1)(1)/(2)+"tan"^(-1)(1)/(3)+"tan"^(-1)(7)/(8) is

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