ins test Test: Test 2 (6.1-6.7) Question 2 of 30 This question: Use the Half-angle formulas to find the exact value of the trigonometric function sin 112.5. Which Half-angle formula should be used to find the exact value of the sin 112.5 ? Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) 1 - cos O A. sin 112.50 = sin 2 2 1 + cos O B. sin 112.50 = sin 2 2 1 - cos O C. sin 112.50 = sin 2 2 1 + cos O D. sin 112.50 = sin 2 2 Find the exact value of the sin 112.5. sin 112.50 = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)