组卷网>知识点选题>切弦互化法求值
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填空题 | 容易(0.94) | 2021·全国高三专题练习
更新:2021/07/31组卷:0
多选题 | 较易(0.85) | 2021·全国高三专题练习
解题方法
更新:2021/07/31组卷:0
5 . 如图,在平面直角坐标系eqId2272a344734c4fb088737b84294f7219中,以eqId5b17d7c502534fbaaff7f0ae4db5c73d轴为始边作角eqIdc13953f2514e4c8f9c8aaaf5241c33aceqId4eb56f42ca674f2f9c9101b548763159eqIdc7eed2ad44d84f74a06e2efb47c826ceeqIdbfcc7453ce4746419b0977963fcd10d2,其终边分别交单位圆于eqId052844cae8574a8ab842c38a039baac0eqId8754ce8cf7f34f04abb9a0c041f57f5c两点.若eqId052844cae8574a8ab842c38a039baac0eqId8754ce8cf7f34f04abb9a0c041f57f5c两点的横坐标分别是eqIdfea8cc8a9fb7479797de310ea9a90bd9eqIdaf2b0c3fb95b435c83d9385ce68fd687
说明: figure
(1)求eqId1da26c758da347eba9349df370d6c20feqId8fe598cb3bc94c5999ed950bf878ddac的值;
(2)求扇形eqId5f0bfa1486d74501a6ac424f8d442778(与劣弧eqId1609e6778d084a1d9bb2bf4111fcf29a对应的扇形)的面积eqId51d8a094ee99497ea839941c67407d85的值.
6 . 已知eqIdae1a6da1318c4dde8d2e04496a4ddc55
(1)求eqId326bafd558594c43ac78b6bd3c11d8f6的值
(2)求eqId253d4e6b2bf74548a9695402f3fdf990的值
单选题 | 一般(0.65) | 2021·安徽高一期中
8 . 在eqId64b9b599fdb6481e9f8d9a94c102300b中,角eqId052844cae8574a8ab842c38a039baac0eqId8754ce8cf7f34f04abb9a0c041f57f5ceqId19a4eb16029e4550a14f2afe4741a3c3的对边分别为eqId70a27b6ddf6b478285353abb3b1f3741eqIdaea992e70d4943e49e893817eb885ed7eqId44925af6fb19413689ba5616e3647cba,若eqIdb95d8dc08da447ca9c9bbf7a37a09577,则角eqId8754ce8cf7f34f04abb9a0c041f57f5c的值是(   )
A.eqIdb050c41d1513409598c00ecfe0de8603B.eqId43059a1babed4850ab90728e475e4ce1C.eqIdb050c41d1513409598c00ecfe0de8603eqId381d8d3d9b314595b08c1d0ef7837d46D.eqId43059a1babed4850ab90728e475e4ce1eqIde47b18f6e2f245898ba24e72631104b7
填空题 | 较易(0.85) | 2021·江苏省镇江中学高一期中
解题方法
10 . eqIdef7ac5cdc75142efabe1d98263f9ee33,则eqIdd0c477dcb9324260b1c895a09e46f1c9___________.
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