Question 985700


{{{cos(theta)}}} = {{{-sqrt(2)/2}}}


{{{theta}}} = {{{3pi/4 + 2k*pi}}}, k = 0, +/-1, +/-2, +/-3, . . . 


and 


{{{theta}}} = {{{5pi/4 + 2k*pi}}}, k = 0, +/-1, +/-2, +/-3, . . .