Hi everyone ! Here''s a little problem I''d like to resolve, Can someone help ? I have a 3d vector (A call it VectorA). The I want to get the orthogonal 3d vector from VectorA (i call this new vector VectorB). Now from the VectorB I want to get the angle (in radians) it makes with the x axe. THANKS for any help !!!

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Original post by Mescalito
The I want to get the orthogonal 3d vector from VectorA (i call this new vector VectorB).

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There are many such vectors. You need to specify the problem better.

If you make it a unit vector then each component is the cosine of the angle between the vector and the corresponding axis, i.e. the x component is the angle between the vector and the x-axis.