A pair of parametric equations is given x cos t y sin t 0 t 2 a Sketch the curve represented by the parametric equations y 1 5 1 0 0 5 1 5 1 0 0 5 1 5 1 0 6 5 0 5 1 0 1 5 1 5 1 0 0 5 0 5 y 1 0 1 5 0 5 0 5 1 0 1 5 x 1 0 1 5 X X 1 5 1 0 1 5 1 0 b Find a rectangular coordinate equation for the curve by eliminating the parameter x y x cos 1 y sin 1 0 5 0 5 0 5 1 0 0 5 1 0 1 5 1 5 1 5 0 5 0 5 1 0 1 0 1 5 y y webassign net 0 5 0 5 1 0 1 5 1 0 1 5 X