Use the Half-angle Formulas to find the exact value of the trigonometric function sin 22.5. E) Which Halfangle Formula should be used to nd sin 225? Select the correct choice below and fill in the answer box to complete your choice. 1- sin 1+ cos A. sin 225 = B. sin 225" = 2 2 1+ sin 1- sin ' .:- 0. sin 225 = D. sin 225\" = 2 2 1 cos 1 + cos C .2. E. sin 225: .; g F. sin 225\" = 2 2 1+ sin 1 - cos : g. G. sin 225: T H. sin 225 = T The exact value of the trigonometric function sin 225 is D. (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)