Find the exact value of the expression given below. cos(105)

Last updated: 7/13/2022

Find the exact value of the expression given below. cos(105) Rewrite the expression using a sum or difference formula. Choose the correct answer below. A. cos(105°) = cos (60° +45°) = sin (60°) cos (45°) + cos (60°) sin (45°) B. cos(105°) = cos (60° +45°) = cos (60°) cos (45°)- sin (60°) sin (45°) C. cos(105%) = cos (60° +45°) = sin (60°) cos (45°) - cos (60°) sin (45°) D. cos(105) = cos (60° +45°) = cos (60°) cos (45°) + sin (60°) sin (45°) ***** The exact value of cos(105°) is (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression. Rationalize all denominators.)