Find the Point of Intersection of the Tangent Lines to the Curve

question 143

Short Answer

Find the point of intersection of the tangent lines to the curve $\mathbf { r } ( t ) = \langle \sin \pi t , 7 \sin \pi t , \cos \pi t \rangle$ , at the points where $t = 0$ and $t = 0.5$ .

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