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Unit Binormal Vector Calculator

Find unit binormal vectors step by step

The calculator will find the unit binormal vector to the vector-valued function at the given point, with steps shown.

Related calculators: Unit Tangent Vector Calculator, Unit Normal Vector Calculator, Curvature Calculator

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Your Input

Find the unit binormal vector for r⃗(t)=⟨cos⁡(t),3t,sin⁡(t)⟩\mathbf{\vec{r}\left(t\right)} = \left\langle \cos{\left(t \right)}, \sqrt{3} t, \sin{\left(t \right)}\right\rangle.

Solution

The unit binormal vector is the cross product of the unit tangent vector and the unit normal vector.

The unit tangent vector is T⃗(t)=⟨−sin⁡(t)2,32,cos⁡(t)2⟩\mathbf{\vec{T}\left(t\right)} = \left\langle - \frac{\sin{\left(t \right)}}{2}, \frac{\sqrt{3}}{2}, \frac{\cos{\left(t \right)}}{2}\right\rangle (for steps, see unit tangent vector calculator).

The unit normal vector is N⃗(t)=⟨−cos⁡(t),0,−sin⁡(t)⟩\mathbf{\vec{N}\left(t\right)} = \left\langle - \cos{\left(t \right)}, 0, - \sin{\left(t \right)}\right\rangle (for steps, see unit normal vector calculator).

The unit binormal vector is B⃗(t)=T⃗(t)×N⃗(t)=⟨−3sin⁡(t)2,−12,3cos⁡(t)2⟩\mathbf{\vec{B}\left(t\right)} = \mathbf{\vec{T}\left(t\right)}\times \mathbf{\vec{N}\left(t\right)} = \left\langle - \frac{\sqrt{3} \sin{\left(t \right)}}{2}, - \frac{1}{2}, \frac{\sqrt{3} \cos{\left(t \right)}}{2}\right\rangle (for steps, see cross product calculator).

Answer

The unit binormal vector is B⃗(t)=⟨−3sin⁡(t)2,−12,3cos⁡(t)2⟩.\mathbf{\vec{B}\left(t\right)} = \left\langle - \frac{\sqrt{3} \sin{\left(t \right)}}{2}, - \frac{1}{2}, \frac{\sqrt{3} \cos{\left(t \right)}}{2}\right\rangle.A