[" 28.If "hat u" and "hat v" are unit ve...

[" 28.If "hat u" and "hat v" are unit vectors and "theta" is the acute angle between "],[" them,then "2hat u times3hat v" is a unit vector for "],[" (a) exactly two values of "theta" ."],[" (b) more than two values of "theta" ."],[" (c) no value of "theta" ."],[" (d) exactly one value of "theta.]

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[" 28.If "hat u" and "hat v" are unit vectors and "theta" is the acute angle between "],[" them,then "2hat u times3hat v" is a unit vector for "],[" (a) exactly two values of "theta" ."],[" (b) more than two values of "theta" ."],[" (c) no value of "theta" ."],[" (d) exactly one value of "theta.]

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