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[" 4.If "int(0)^( pi/3)(tan theta)/(sqrt...

[" 4.If "int_(0)^( pi/3)(tan theta)/(sqrt(2k)sec theta)d theta=1-(1)/(sqrt(2)),(k>0)" then the value of "k" is "],[[" (a) "2," (b) "1," (c) "1/2," (d) "4]],[[" (a) "2," (b) "1," (c) "1/2," (d) "4]]

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