on 9 of 13 > Macmillan Learning Find one solution, coming from the interval [0,], of the equation 4 cos (x) = 1 + 4 sin (x). Suggestion: Think about the double-angle formula for the cosine. (Express numbers in exact form. Use symbolic notation and fractions where needed.) Provide an approximated solution correct to two decimal places. (Use decimal notation. Give your answer to two decimal places. If the answer is given in degrees, include the degree symbol.)