Let vec(a),vec(b) and vec( c ) are three unit vectors such that vec(a)xx(vec(b)xx vec( c ))=(sqrt(3))/(2)(vec(b)+vec( c )). If the vectors vec(b) and vec( c ) are not parallel then the angle between vec(a) and vec(b) is ……….

Let vec(a),vec(b) and vec( c ) are three unit vectors such that vec(a)

1.	Let vec(a),vec(b) and vec( c ) are three unit vectors such that vec(a)xx(vec(b)xx vec( c ))=(sqrt(3))/(2)(vec(b)+vec( c )). If the vectors vec(b) and vec( c ) are not parallel then the angle between vec(a) and vec(b) is ……….
Answer» `(3pi)/(4)` `(pi)/(2)` `(2PI)/(3)` `(5pi)/(6)` Answer :D

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Let vec(a),vec(b) and vec( c ) are three unit vectors such that vec(a)xx(vec(b)xx vec( c ))=(sqrt(3))/(2)(vec(b)+vec( c )). If the vectors vec(b) and vec( c ) are not parallel then the angle between vec(a) and vec(b) is ……….

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