Question

Select the correct option from the given alternatives:

If `bar"a", bar"b", bar"c"` are non-coplanar unit vectors such that `bar"a"xx (bar"b"xxbar"c") = (bar"b"+bar"c")/sqrt2`, then the angle between `bar"a"  "and"  bar"b"` is 

Options

• `(3pi)/4`

• `pi/4`

• `pi/2`

• `pi`

Answer 1

`(3pi)/4`