题目

Boris was a teacher. He taught science at a high school. For he needed some books for his lessons, he went to a bookshop to buy some. After he put them in his car in a quiet street, he went to buy some other things at other shops. When he came back to his car, one window was open and the books were gone. Boris drove home sadly. That night he called a newspaper. The next day people read an advertisement in the newspaper: Books: Have you got any old books? I buy old and modern books. Open all day on Saturdays. Boris 82 West Road. And then he went to the police station with the Wednesday 一个角的余角比它的补角的23少45°，求这个角的度数．