It could be one of two things. First I would eliminate all health issues , high blood pressure,Diabetes and certin medications. There are different inner ear diagnosis that all so can be eliminated. I get dizzy every so often when my head goes to right or when I tilt forward when picking things up off the floor. I did go to my doctor and there was no real diagnosis but at the same time nothing out of the ordinary.
convention, they could have picked either direction.
Yes, it happens all the time. But the members of One Direction are all straight.
Aphrodite could appear with either.
It could be a displacement vector.
he could either be not so straight after all or a huge homophobe. or both
It could be, but not necessarily. If one ray is parallel to the ground, the other ray could be going straight up, or it could be parallel to the ground also, just going in a different direction. Think of an L. The angle in that L is 90 degrees. You could rotate that L in any direction so that it sticks straight up, or you could rotate it so that it is flat to the ground, or so that it is pointing down. It is still 90 degrees.
Could be a few days either direction.
Both. Depending on which direction you are looking from. You could either go northeast across Canada, or northwest across Africa.
You will know when you feel romantically attracted to the same-sex. You could be bisexual but if you are only aroused by the same-sex then you know you're not straight. Either way it is okay to be you gay or straight.
You could just go straight
It could be either one. There's no way of knowing.
It could be either. Tandem simply means that the power unit has two drive axles which operate in tandem. It's common in both articulated and straight trucks.