sin() and cos()... wtf? (c++)

Check this out:

double direction, length, result1, result2;
out << "direction?\n";
cin >> direction;
result1 = cos(direction);
result2 = sin(direction);
cout << result1 << "\n";
cout << result2 << "\n";This code is fucked up, because when I enter 45, it should return the same value (.70786 or something similar).  Instead, I get:

0.525322 (cos)
0.850904 (sin)

It's almost like the C++ library is fucked up or something.  I know I haven't forgotten basic geometry (windows calculator bears this out) and I don't think I'm going insane, so WHAT AM I DOING WRONG?

>>16
Uh, you should have learned about radians in high school geometry. Not to mention good luck working on "indie games" with that level of math knowledge, since even rudimentary physics will require at least a basic grasp of calculus.