I've no idea what to do with this, the examples didn't have anything of this style:(adsbygoogle = window.adsbygoogle || []).push({});

The point A has coordinates (3,0,0), the point B has coordinates, (0,3,0), the point C has coordinates (0,0,7). Find, to 0.1 degrees, the sizes of the angle between the planes OAB and ABC, where O is the origin.

Could someone give me an idea of what to do? I've only just introduced myself to cartesian coordinates/vectors in 3 dimensions.

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# Homework Help: Cartesian coordinates in 3D problem.

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