If `(|a+b|)/(|a-b|)=1`, then the angle between `a` and `b` is

If |a+b|gt|a-b| , then the angle between a and b is

If |a+b|gt|a-b| , then the angle between a and b is

If |a+b|gt|a-b| , then the angle between a and b is

If |a|=1,|b|=3 and |a-b|=sqrt(7) , then the angle between a and b is

If (a+3b)*(7a-5b)=0 and (a-4b)*(7a-2b)=0 . Then, the angle between a and b is

If (a+3b)*(7a-5b)=0 and (a-4b)*(7a-2b)=0 . Then, the angle between a and b is

If AxxB=BxxA then the angle between A and B is

If a and b are unit vectors and a xx b = 1 , then the angle between a and b is

If a and b are two vectors such that 2a+b=e_(1)" and "a+2b=e_(2) , where e_(1)=(1, 1, 1)" and "e_(2)=(1,1,-1) , then the angle between a and b is

If A.B=AxxB , then angle between A and B is