(a) Sketch the plane curve with the given vector equation .
(b) Find rt (t).
© Sketch the position vector r(t) and the tangent vector r '(t) for the given value of t.
r(t)=4 sin t i -2cos t j, t =3π / 4
(a) Sketch the plane curve with the given vector equation .
(b) Find rt (t).
© Sketch the position vector r(t) and the tangent vector r '(t) for the given value of t.
r(t)=4 sin t i -2cos t j, t =3π / 4