problem setting rotation

$$anonymous$$ all, im simply trying to set the rotation for an object in the transform, in code rather than manually, for example to 0, 90, 0;

transform.rotation = Quaternion.Euler(new Vector3(-90,0,0));

but the 90 comes out as 90.00001 in the inspector?

ive also tried transform.Rotate(new Vector3(-90,0,0));

but the same t$$anonymous$$ng happens.

am i doing somet$$anonymous$$ng wrong? is there a way to set it precisely?

thanks for any help.

paul uk