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Mathematics 7 Online
OpenStudy (anonymous):

Binormal vector? Consider the helix r(t)=(cos(4t),sin(4t),-3t). Compute, at t=π/6: I've found the tangent vector: (-(4/5)sin(4pi/6), (4/5)cos(4pi/6), -3/5) normal vector: (1/2, -sin(4pi/6), 0)

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