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Problem with Sin() and Cos()

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I havent taken math in a while, but Sin & Cos, when i use them in C++ , when i give them angles like 90 and 45, they know im giving them numbers, but when i give them angles like 0.5 and 0.1, i think they think im giving them radians, im not sure if this is right, i dont remeber much math, anyone help with this?

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All trigonometric functions expect the arguments to be radians. This is not only the fact in C++, but a mathematic convention. If you want to use degrees, you will have to convert them to radians when you call the functions, i.e. sin(degrees * (PI/180)) (unless I messed up and got the ratio backwards - again).

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