Solve each equation for
cosxtanx = 1/2
a. 60, 120
b. 30, 150
C. 30, 330
d. 60, 300

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.