Question

2.15 Solve the equation for exact solutions over the interval [0, 2x). 3 cotx + 1 = -2 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The solution set is { } (Type an exact answer, using x as needed. Type your answer in radians. Use integers or fra OB. The solution is the empty set. Click to select and enter your answers) and then click Check Answer All parts showing T O Type here to search

Answer 1

solution & [xin [0, 29) ] 3 cotx + 1 = -2 3 cotxe = -3 cotx= -1 cor x = cct ( 39 + n) [x = 3 + n] for não o x = 311 n=l, a = 7 4 Therefore, the Exact solutions over the interval [0, 21) is x= 3,