I’m not entirely sure what it is that you’re asking. But if you’re asking if the heads for an audio cassette are angled, the answer is no. They’re perfectly perpendicular.
I was referring to whether the magnetization lies along the normal of the film/tape or if it's in plane. HDDs were able to increase density by moving to materials that had a magnetization with perpendicular anisotropy but I can't seem to find confirmation if cassette tapes and vhs had in plane anisotropy back then. More so I can't seem to find if today's magnetic tape storage has moved to perpendicular magnetic anisotropy.
For VHS, yes, they are angled. 30 degrees, IIRC.
If that’s, indeed, what you’re asking.