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[" Find the value of "(i)cos^(-1)(cos(-1)/(6))(11)" ta "],[" Prove that: "tan^(-1)(1)/(2)+tan^(-1)(2)/(11)=tan^(-1)(3)/(4)]

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Show that ,,tan^(-1)(1)/(2)+tan^(-1)(2)/(11)=tan^(-1)(3)/(4)

show that tan^(-1)(1/2)+tan^(-1)(2/11)=tan^(-1)(3/4)

show that tan^(-1)(1/2)+tan^(-1)(2/11)=tan^(-1)(3/4)

Prove that: tan^(-1)(2)/(11)+tan^(-1)(7)/(24)=tan^(-1)(1)/(2)

tan^(-1)((1)/(4))+tan^(-1)((2)/(11))=

Prove that: tan^(-1)((2)/(11))+tan^(-1)((7)/(24))=tan^(-1)((1)/(2))

Show that tan^(-1)1/2+tan^(-1)2/(11)=tan^(-1)3/4

Prove that: tan^(-1)(2/11)+tan^(-1)(7/24)=tan^(-1)(1/2)

Prove that: tan^(-1)2/(11)+tan^(-1)7/(24)=tan^(-1)1/2