cos()
cos(x) returns cos x. Input number is in radian
import math
print(math.cos(1)) # 0.5403023058681398
print(math.cos(0.56)) # 0.8472551110134161
print(math.cos(-0.56)) # 0.8472551110134161
print(math.cos(-1)) # 0.5403023058681398
print(math.cos(0)) # 1.0
print(math.cos(math.pi)) # -1.0
Note that all the inputs are in radian.
Inputs in degree
We can convert radian value to degree and use the same
import math
in_degree = 90
in_redian = math.radians(in_degree)
print(math.cos(in_redian)) # 6.123233995736766e-17
1 radian = 57.2957914331 degree
1 degree = 0.0174533 radian
Drawing graph of cos()
Using this we will use Matplotlib to generate graph of cos
import matplotlib.pyplot as plt
x=[]
y=[]
i=0
while (i<=8):
x.append(i)
y.append(math.cos(i))
i=i+0.1
plt.plot(x,y)
plt.axvline(x=0.00,linewidth=2, color='#f1f1f1')
plt.axhline(y=0.00,linewidth=2, color='#f1f1f1')
plt.grid(linestyle='-', linewidth=0.5,color='#f1f1f1')
plt.show()
« acos()
asin() sin() tan()
Drawing sin and cos curves on Tkinter Canvas
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