Find the normal vector N() to r() = R (cos , sin ), the circle of radius
Question:
Find the normal vector N(θ) to r(θ) = R (cos θ, sin θ), the circle of radius R. Does N(θ) point inside or outside the circle? Draw N(θ) at θ = π/4 with R = 4.
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We first find the unit tangent vector We have Hence r0 R sin 8 cos 0 We compute T0 and its length T0 ...View the full answer
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