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[" 1If "cos^(-1)((2)/(3x))+cos^(-1)((3)/...

[" 1If "cos^(-1)((2)/(3x))+cos^(-1)((3)/(4x))=(pi)/(2)(x>(3)/(4))],[" then "x" is equal to "],[[" (a) "(sqrt(145))/(10)," (b) "(sqrt(146))/(12)],[" (c) "(sqrt(145))/(12)," (d) "(sqrt(145))/(11)]]

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