Please solve this question in details and fully explaination. Thanks so much.

10. A 20kg door is supported by two hinges at the locations shown (at points A and B). The hinges are aligned as to not exert couple moments on the door. The hinge at B does not exert a force parallel to the hinge axis, The door is homogeneous and the weight of the door acts at its center of mass. Determine the reactions at A and B when the door is open 30*. Z 0.80 m 0.30 m B+ 1.50 m 0.30 m X 30