1.

Cos^(-1)(cos""(10pi)/7)+Sin^(-1)(sin""(35pi)/11)+Tan^(-1)(tan""(24pi)/13)+Cot^(-1)(cot""(26pi)/5) is

Answer»

`(4PI)/7+(PI)/55-(2pi)/13`
`(4pi)/7-(pi)/55-(2pi)/13`
`(4pi)/7-(pi)/55+(2pi)/13`
`-(4pi)/7+(pi)/55+(2pi)/13`

Answer :A


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