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[" Question 3.Prove that : "tan^(-1)((1)...

[" Question 3.Prove that : "tan^(-1)((1)/(4))+tan^(-1)((2)/(9))],[(1)/(2)sin^(-1)(4)/(5)]

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Prove that: tan^(-1)((1)/(4))+tan^(-1)((2)/(9))=(1)/(2)cos^(-1)((3)/(5))

Prove that. tan^(-1)((1)/(4)) +tan^(-1)((2)/(9)) =(1)/(2) cos^(-1) ((3)/(5)) .

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

Prove that 2 tan^(-1) ((3)/(4)) = tan^(-1) ((24)/(7))

Prove that "tan"^(-1)(1)/(4) +"tan"^(-1)(2)/(9) =(1)/(2)"tan"^(-1)(4)/(3) .

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

Prove the following: tan^(-1)((1)/(4))+tan^(-1)((2)/(9))=(1)/(2)cos^(-1)((3)/(5))

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

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

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