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If sin^(-1)((x)/(13))+"cosec"^(-1)((13)/...

If `sin^(-1)((x)/(13))+"cosec"^(-1)((13)/(12)) =(pi)/(2)`, then the value of x is

A

5

B

4

C

12

D

11

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2014-MULTIPLE CHOICE QUESTIONS
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