Find the exact value of the expression. tan 75 Rewrite the expression using a sum or difference formula. Choose the correct answer below. O A. tan 75 = tan (120-45) = tan 120-tan 45 1+ tan 120 tan 45 tan 120+tan 45 1+ tan 120 tan 45 O B. tan 75 = tan (120-45) = - O C. tan 75 = tan (120-45) = tan 120 + tan 45 1-tan 120 tan 45 tan 120 tan 45 1-tan 120 tan 45 O D. tan 75 = tan (120-45)=- The exact value of tan 75 is (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)