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" (iv) "sec^(2)(tan^(-1)2)+csc^(2)(cot^(...

" (iv) "sec^(2)(tan^(-1)2)+csc^(2)(cot^(-1)3)=15

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sec^(2)(tan^(-1)2) +"cosec"^(2)(cot^(-1)3)=

sec^(2)(tan^(-1)2) +"cosec"^(2)(cot^(-1)3)=

sec^(2)(tan^(-1)2) + "cosec"^(2)(cot^(-1)3)=

sec^(2)(tan^(-1)4)+cosec^(2)(cot^(-1)3) =

sec^(2)(Tan^(-1)2)+cosec^(2)(Cot^(-1)3)=

sec^(2) ( tan^(-1)2) + cosec^(2) ( cot^(-1)3) =

sec ^(2)(tan ^(-1) 2)+cosec^(2)(cot ^(-1) 3)=

sec ^(2)(tan ^(-1) 2)+cosec^(2)(cot ^(-1) 3)=

sec^(2)(tan^(-1)(2))+cosec^(2)(cot^(-1)(2))=

Prove that: sec^(2) (tan^(-1)2) + "cosec"^(2)(cot^(-1)3)=15 .