Hey all, Stuck on another calculus question. It seems prettty simple but I can't seem to figure it out. Draw the curve for x=4 cos t y=5 sen t I plugged in values and drew hte curve with was pretty easy but i can't figure out the ecuation for the curve. This is what i did so far: x/4=cos t y/5=sen t t[0,180] (I couldn't find the pi symbol) (x/4)^2=cos^2 t (y/5)^2=sen^2 t (x/4)^2+(y/5)^2=cos^2 t + sent^2 t (x/4)^2+(y/5)^2 = 1 ....from this is see a circle with radius 1 and center in th origin. But the curve i got from plugging in values is clearly a parabola. any help???