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(iv)4tan^(-1)(1)/(5)-tan^(-1)(1)/(239)=(...

(iv)4tan^(-1)(1)/(5)-tan^(-1)(1)/(239)=(pi)/(4)

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Prove: 4tan^(-1)((1)/(5))-tan^(-1)((1)/(239))=(pi)/(4)

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Prove that : tan^(-1)((1)/(2))+tan^(-1)((1)/(5))+tan^(-1)((1)/(8))=(pi)/(4)

4 tan ^(-1 )""(1)/(5) - tan ^(-1)""(1)/(239)=(pi)/(4)

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

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

Prove the following: 4\ tan^(-1)(1/5)-tan^(-1)(1/(239))=pi/4

Find the value of 4tan^(-1)((1)/(5))-tan^(-1)((1)/(239))

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