Question: At what point(s) does the curve r(t) = (sin(t), 2 sin(t) cos(t), cos(t)) intersect the yz-plane?

At what point(s) does the curve r(t) = (sin(t), 2 sin(t) cos(t),

At what point(s) does the curve r(t) = (sin(t), 2 sin(t) cos(t), cos(t)) intersect the yz-plane?

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