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高一数学（人教B版）-两角和与差的正弦、正切（第一课时）

视频地址：https://video.cache.bdschool.cn/vd/551d9d7ddbfdd09f0f7413e816f09bb4.mp4
附件：0527高一数学(人教B版)-两角和与差的正弦、正切（第一课时）-1教案.docx.docx
附件：0527高一数学（人教B版）-两角和与差的正弦、正切（第一课时）-2PPT课件.pptx.pptx
附件：0527高一数学（人教B版）-两角和与差的正弦、正切（第一课时）-3学习任务单 .docx.docx

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高一数学（人教A版）-立体几何初步单元复习（第二课时）高一数学（人教B版）-两角和与差的正弦、正切（第二课时）

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