![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/402980/image.png)
How to plot cos(x) + cos(y) + cos(z) = 0
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Teerapong Poltue
le 4 Nov 2020
Réponse apportée : Ameer Hamza
le 4 Nov 2020
How can I plot
cos(x) + cos(y) + cos(z) = 0
In 3D plane (the expected 3D model is attached )![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/402975/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/402975/image.png)
and I also want to know how to put my own contour on the surface
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Ameer Hamza
le 4 Nov 2020
Try fimplicit3()
fimplicit3(@(x,y,z) cos(x) + cos(y) + cos(z))
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/402980/image.png)
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