期末测试题一、选择题：
1．sin150°的值等于
()．A．<Object: word/embeddings/oleObject1.bin>
B．－<Object: word/embeddings/oleObject2.bin>
C．<Object: word/embeddings/oleObject3.bin>
D．－<Object: word/embeddings/oleObject4.bin>
2．已知<Object: word/embeddings/oleObject5.bin>
＝(3，)，那么<Object: word/embeddings/oleObject6.bin>
等于()．A．2B．3C．4D．53．在到2范围内，与角
－<Object: word/embeddings/oleObject7.bin>
终边相同的角是
()．A．<Object: word/embeddings/oleObject8.bin>
B．<Object: word/embeddings/oleObject9.bin>
C．<Object: word/embeddings/oleObje ...