[" If "vec a,vec b,vec c" are unit vecto...

[" If "vec a,vec b,vec c" are unit vectors such that "vec avec b=0=vec avec c" and the angle between "],[vec b" and "vec c" is "(pi)/(3)" then the value of "|vec a timesvec b-vec a timesvec c|" is "],[[" A) "(1)/(2)," B) "1," C) "2," D) "(1)/(3)]]

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[" If "vec a,vec b,vec c" are unit vectors such that "vec a*vec b=0=vec a*vec c" and the angle between "],[vec b" and "vec c" is "(pi)/(3)" then the value of "|vec a timesvec b-vec a timesvec c|" is "],[[" A) "(1)/(2)," B) "1," C) "2," D) "(1)/(3)]]

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[" If "vec a,vec b,vec c" are unit vectors such that "vec avec b=0=vec avec c" and the angle between "],[vec b" and "vec c" is "(pi)/(3)" then the value of "|vec a timesvec b-vec a timesvec c|" is "],[[" A) "(1)/(2)," B) "1," C) "2," D) "(1)/(3)]]