What is the angle between `veca` and the resultant of `veca+vecb` and `veca-vecb` ?

What is the angle between vector vecA and the resultant of (vecA+vecB) and (vecA-vecB) ?

what is the angle between veca and vecb, if veca. vecb = 3 and | veca xx vecb| = 3 sqrt3.

What is the angle between veca and vecb if abs(veca+vecb)=abs(veca-vecb) ?

If veca and vecb are unit vectors then what is the angle between veca and vecb for sqrt(3)veca-vecb to be a unit vector?

The angle between veca and vecb if vecaxxvecb=veca*vecb is :

the angle between vectors veca × vecb and vecb × veca is

The angle between vecA - vecB and vecA xx vecB is ( vecA ne vecB)