import math

def main():

math.cos(math.pi)

main()

print(main())

pls explain

import math

def main():

math.cos(math.pi)

main()

print(main())

pls explain

2 Likes

Hey @vaishu.swap10112016 Import math is a built in module which is used to perform mathematical operations like sin , cos , tan , addition , etc.

So in this code for calculation of cos and pi import math is used

2 Likes

Trigonometric functions |
Description |
---|---|

math.cos() | It returns the cosine of the number (in radians). |

math.sin() | It returns the sine of the number (in radians). |

math.tan() | It returns the tangent of the number in radians. |

math.acos() | It returns the arc cosine of the number in radians. |

math.asin() | It returns the arc sine of the number in radians. |

math.atan() | It returns the arc tangent of the number in radians. |

```
import math
print(math.degrees((math.pi/2)))
print(math.radians(60))
```

```
import math
print(math.sin(math.pi/3)) #pi/3 radians is converted to 60 degrees
print(math.tan(math.pi/3))
print(math.cos(math.pi/6))
```

```
import math
print(math.asin(1))
print(math.acos(0))
print(math.atan(1))
```

```
import cmath
x = 1.0
y = 1.0
z = complex(x,y)
print ("The arc sine is: ",cmath.asin(z))
print ("The arc cosine is: ",cmath.acos(z))
print ("The arc tangent is: ",cmath.atan(z))
```

```
import cmath
x = 1.0
y = 1.0
z = complex(x,y)
print ("The hyperbolic sine is : ",cmath.sinh(z))
print ("The hyperbolic cosine is : ",cmath.cosh(z))
print ("The hyperbolic tangent is : ",cmath.tanh(z))
```

```
import cmath
x = 1.0
y = 1.0
z = complex(x,y)
print ("The inverse hyperbolic sine is : ",cmath.asinh(z))
print ("The inverse hyperbolic cosine is : ",cmath.acosh(z))
print ("The inverse hyperbolic tangent is : ",cmath.atanh(z))
```

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ok now i got it… thank u for great explanation

1 Like