下列哪个选项是正确计算42度(角度)的余弦值?
Adouble d=Math.cos(42);
Bdouble d=Math.cosine(42);
Cdouble d=Math.cos(Math.toRadians(42));
Ddouble d=Math.cos(Math.toDegrees(42));
Adouble d=Math.cos(42);
Bdouble d=Math.cosine(42);
Cdouble d=Math.cos(Math.toRadians(42));
Ddouble d=Math.cos(Math.toDegrees(42));