X r cos

X r cosX r cosX r cosX r cosX r cosX r cos
X r cosX r cosX r cosX r cosX r cosX r cos
X r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cosX r cos