To find the binormal vector, you must first find the unit tangent vector, then the unit normal vector. where is the vector and \displaystyle \left \| r(t)\right \| is the magnitude of the vector.

What does the binormal vector mean?

The binormal vector is defined to be, →B(t)=→T(t)×→N(t) Because the binormal vector is defined to be the cross product of the unit tangent and unit normal vector we then know that the binormal vector is orthogonal to both the tangent vector and the normal vector.

What is binormal of a curve?

: the normal to a twisted curve at a point of the curve that is perpendicular to the osculating plane of the curve at that point.