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

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

A

(a) 5

B

(b) 4

C

(c) 12

D

(d) 11

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The correct Answer is:

A

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