The radial curve of the deltoid
 |  | ![1/3a[2cost+cos(2t)]](/images/equations/DeltoidRadialCurve/Inline3.svg) |
(1)
|
 |  | ![1/3a[2sint-sin(2t)]](/images/equations/DeltoidRadialCurve/Inline6.svg) |
(2)
|
with radiant point 
is the trifolium
 |  | ![x_0+4/3a[cost-cos(2t)]](/images/equations/DeltoidRadialCurve/Inline10.svg) |
(3)
|
 |  | ![y_0+4/3a[sint+sin(2t)].](/images/equations/DeltoidRadialCurve/Inline13.svg) |
(4)
|
Deltoid Radial Curve
See also
Deltoid, Radial Curve, TrifoliumExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Deltoid Radial Curve." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DeltoidRadialCurve.html