How do you determine whether the sign of a trigonometric function (sine, cosine, tangent) is positive or negative when dealing with half angles?

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*

The american colonies would have been ruled by a king.