Question: Use the binormal vector defined by the equation B = T N. Find the unit tangent, unit normal, and binormal vectors for the helix

Use the binormal vector defined by the equation B = T × N.

Find the unit tangent, unit normal, and binormal vectors for the helix

r(t) = 4 cos ti + 4 sin tj + 3tk

at t = π/2. Sketch the helix together with these three mutual orthogonal unit vectors.

r(t) = 4 cos ti + 4 sin tj + 3tk

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