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sin^(-1)sqrt((2-sqrt(3))/4)+cos^(-1)(sqr...

`sin^(-1)sqrt((2-sqrt(3))/4)+cos^(-1)(sqrt(12)/4)+sec^(-1)(sqrt(2))=`
(a) 0
(b) `pi/4`
(c) `pi/6`
(d) `pi/2`

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