Reputation: 2517
cmath asin() problems
Hey so i managed to locate the problem in some graphics math i am coding, and apparently when i reach this line of code: float test3= asin(test2); where test2= 0.017409846.
to my understanding 'asin' is 'arc sin' which is 'inverse sin' (what i want) the result of this line of code however is test3 = 0.017410725. when plugging this into my calculator inverse sine of test2 is .997561.
Why isn't asin working?? thanks!
Upvotes: 0
Views: 1306
Answers (3)
Reputation: 2051
arcsine return value is expressed in radians, not in degrees (your calculator is probably set to display degrees).
Upvotes: 1
Reputation: 129964
It is working, you're using wrong units. asin takes radians, and your calculator is probably in degrees mode.
Upvotes: 1
Reputation: 994589
Your calculator is set to degrees mode. The asin() function returns radians.
Degrees and radians are related by the formula:
degrees = (180/π) * radians
Upvotes: 7
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