For this assignment you submit answers by question parts The

For this assignment, you submit answers by question parts The number of submissions remaining each question part only changes if you submit or change the answer. Your best submission for each question part is used for your score. Solve the equation. (Enter your answers as a comma-separated list. Use n as an integer constant. Enter your response in radians.) 7 cos x + 4 = -cos x

Solution

7 cos x + 4 = - cos x

7 cos x + cos x = -4

8 cos x = -4

cos x = (-4 / 8)

cos x = (-1 / 2)

x = cos ^-1(-1/2)

x = 2.09 radians