cos result incorrect
I import "math.h".
I can use the cos function,
but when I execute cos(0.321139585333178)开发者_运维问答
the result is 0.948876
If I use the calculator in Mac or use a normal calculator, the result is 0.999984292347418
Can anyone help me to solve that problem?
You're confusing degrees with radians.
cos(0.321139585333178 degrees) = 0.999984292
cos(0.321139585333178 radians) = 0.948876326
- To convert from radians to degrees, multiply by 180/π.
- To convert from degrees to radians, multiply by π/180.
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