Use the x y coordinates in the figure to find the value of the trigonometric function at the indicated real number s or state that the expression is undefined COS 53 4 1 3x 5x 4 6 1 0 7x 6 5x 1 4 1 12 47 on 14 0 1 4x 3 13 7 2 Ay IN 3 5x 3 3x 2 0 1 x 1 AI x 4 7x 6 12 N 6 0 11x 1 0 13 2 4 Select the correct choice below and if necessary fill in the answer box to complete your choice O A 5x 3 Simplify your answer including any radicals Use integers or fractions for any numbers in the expression COS OB The expression is undefined