```
from turtle import *
from math import *
right(90)
n=cos(radians(heading()-45))/4+0.5
pencolor(n,n*0.8,n*0.8)
```
```
from math import *
n =cos(radians(90-45))
#n = cos(45)
print(n)
```
```
import turtle
from math import cos,radians
a = turtle.heading()
print(a)
turtle.speed(1)
#turtle.mode('logo')
turtle.mode('world')
#turtle.setworldcoordinates(-500,-500,500,500)
#turtle.setworldcoordinates(-50,-7.5,50,7.5)
for i in range(4):
turtle.left(100)
print(turtle.heading())
#print(val)
#if val >0 :
n=cos(radians())
print(n)
turtle.write(str(val))
turtle.backward(100)
turtle.left(90)
```
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