python - Wrong asin result

Question

My code:

import math
x = input()
print(math.asin(math.radians(float(x))))

My x was 0.7071067811865475, and the result was some irracional number between 0 and 1, but in my knowledge it should have been around 45

Answer 1

You're converting the wrong number with the wrong function.

>>> import math
>>> x = 0.7071067811865475
>>> math.degrees(math.asin(x))
44.99999999999999
>>>

That is, given x (which is the sine of an angle) call asin to compute the angle (in radians), and then use degrees to convert that angle to degrees.