Learning NumPy - Mathematical Functions - Part 14¶

import numpy as np
a = np.array([0,30,45,60,90])

print ('Sine of different angles:')
# Convert to radians by multiplying with pi/180 
print (np.sin(a*np.pi/180))
print ('\n')

print ('Cosine values for angles in array:')
print (np.cos(a*np.pi/180))
print ('\n')

print ('Tangent values for given angles:')
print (np.tan(a*np.pi/180))

import numpy as np
a = np.array([0,30,45,60,90])

print ('Array containing sine values:')
sin = np.sin(a*np.pi/180)
print (sin)
print ('\n')

print ('Compute sine inverse of angles. Returned values are in radians.')
inv = np.arcsin(sin)
print (inv)
print ('\n')

print ('Check result by converting to degrees:')
print (np.degrees(inv))
print ('\n')

print ('arccos and arctan functions behave similarly:')
cos = np.cos(a*np.pi/180)
print (cos)
print ('\n')

print ('Inverse of cos:')
inv = np.arccos(cos)
print (inv)
print ('\n')

print ('In degrees:')
print (np.degrees(inv))
print ('\n')

print ('Tan function:')
tan = (np.tan(a*np.pi/180))
print (tan)
print ('\n')

print ('Inverse of tan:')
inv = (np.arctan(tan))
print (inv)
print ('\n')

print ('In degrees:')
print (np.degrees(inv))

import numpy as np
a = np.array([1.0,5.55, 123, 0.567, 25.532])

print ('Original array:')
print (a)
print ('\n')

print ('After rounding:')
print (np.around(a))
print (np.around(a, decimals = 1))
print (np.around(a, decimals = -1))

import numpy as np
a = np.array([-1.7, 1.5, -0.2, 0.6, 10])

print ('The given array:')
print (a)
print ('\n')

print ('The modified array:')
print (np.floor(a))

import numpy as np
a = np.array([-1.7, 1.5, -0.2, 0.6, 10])

print ('The given array:')
print (a)
print ('\n')

print ('The modified array:')
print (np.ceil(a))