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cos(tan^(-1)((1)/(3))+tan^(-1)((1)/(2)))...

`cos(tan^(-1)((1)/(3))+tan^(-1)((1)/(2)))=`

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

tan(cos^(-1)((3)/(5))+tan^(-1)((1)/(4)))

Prove that : tan^(-1) 1 + tan^(-1) 2 + tan^(-1) 3= pi = 2(tan^(-1) 1 + tan^(-1)((1)/(2)) + tan^(-1)( (1)/(3)))

Prove that : tan^(-1) 1 + tan^(-1) 2 + tan^(-1) 3= pi = 2(tan^(-1) 1 + tan^(-1)((1)/(2)) + tan^(-1)( (1)/(3)))

tan(cos^(-1)((4)/(5))+tan^(-1)((2)/(3)))=

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

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

tan [cos^(-1)((4)/(5)) +tan ^(-1)((2)/(3))]=....

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